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20222123121205 = 512731845863183
BaseRepresentation
bin1001001100100010101000…
…11101110001101000110101
32122121012211112022012011121
410212101110131301220311
510122304402004334310
6111001525355303541
74155000030265345
oct446212435615065
978535745265147
1020222123121205
116497177348685
12232722414abb1
13b38c26b02675
144dca825acd25
152510556590da
hex126454771a35

20222123121205 has 8 divisors (see below), whose sum is σ = 24457622925312. Its totient is φ = 16050315043728.

The previous prime is 20222123121199. The next prime is 20222123121271. The reversal of 20222123121205 is 50212132122202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20222123121205 - 25 = 20222123121173 is a prime.

It is a super-2 number, since 2×202221231212052 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20222123121205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15922930957 + ... + 15922932226.

It is an arithmetic number, because the mean of its divisors is an integer number (3057202865664).

Almost surely, 220222123121205 is an apocalyptic number.

It is an amenable number.

20222123121205 is a deficient number, since it is larger than the sum of its proper divisors (4235499804107).

20222123121205 is a wasteful number, since it uses less digits than its factorization.

20222123121205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31845863315.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 20222123121205 its reverse (50212132122202), we get a palindrome (70434255243407).

The spelling of 20222123121205 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred five".

Divisors: 1 5 127 635 31845863183 159229315915 4044424624241 20222123121205