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12220012212031 = 136611422089167
BaseRepresentation
bin1011000111010011000101…
…1111001010111100111111
31121021012222122212111022001
42301310301133022330333
53100203041111241111
641553443543203131
72400603202655011
oct261646137127477
947235878774261
1012220012212031
113991529356108
1214543a14464a7
136a845aaa1030
143036478441b1
15162d0d2241c1
hexb1d317caf3f

12220012212031 has 8 divisors (see below), whose sum is σ = 13179922409024. Its totient is φ = 11262946194720.

The previous prime is 12220012211999. The next prime is 12220012212049. The reversal of 12220012212031 is 13021221002221.

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 12220012212031 - 25 = 12220012211999 is a prime.

It is a super-2 number, since 2×122200122120312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220012212631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711035991 + ... + 711053176.

It is an arithmetic number, because the mean of its divisors is an integer number (1647490301128).

Almost surely, 212220012212031 is an apocalyptic number.

12220012212031 is a deficient number, since it is larger than the sum of its proper divisors (959910196993).

12220012212031 is a wasteful number, since it uses less digits than its factorization.

12220012212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422089841.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12220012212031 its reverse (13021221002221), we get a palindrome (25241233214252).

The spelling of 12220012212031 in words is "twelve trillion, two hundred twenty billion, twelve million, two hundred twelve thousand, thirty-one".

Divisors: 1 13 661 8593 1422089167 18487159171 940000939387 12220012212031