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20002002210121 = 24678107824163
BaseRepresentation
bin1001000110001000101000…
…01111001000110101001001
32121211011122220222022121011
410203010110033020311021
510110203100031210441
6110312443140243521
74133045155360111
oct443042417106511
977734586868534
1020002002210121
11641188a884148
1222b06320a05a1
13b21247053059
144d2160130041
1524a470a33581
hex1231143c8d49

20002002210121 has 4 divisors (see below), whose sum is σ = 20010110036752. Its totient is φ = 19993894383492.

The previous prime is 20002002210101. The next prime is 20002002210131. The reversal of 20002002210121 is 12101220020002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20002002210121 - 211 = 20002002208073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002002210101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4053909615 + ... + 4053914548.

It is an arithmetic number, because the mean of its divisors is an integer number (5002527509188).

Almost surely, 220002002210121 is an apocalyptic number.

It is an amenable number.

20002002210121 is a deficient number, since it is larger than the sum of its proper divisors (8107826631).

20002002210121 is an equidigital number, since it uses as much as digits as its factorization.

20002002210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107826630.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20002002210121 its reverse (12101220020002), we get a palindrome (32103222230123).

The spelling of 20002002210121 in words is "twenty trillion, two billion, two million, two hundred ten thousand, one hundred twenty-one".

Divisors: 1 2467 8107824163 20002002210121