256105104122 has 96 divisors (see below), whose sum is σ = 463060426752. Its totient is φ = 105856130016.

The previous prime is 256105104089. The next prime is 256105104137. The reversal of 256105104122 is 221401501652.

It is a super-2 number, since 2×256105104122² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172693193 + ... + 172694675.

It is an arithmetic number, because the mean of its divisors is an integer number (4823546112).

Almost surely, 2^256105104122 is an apocalyptic number.

256105104122 is a deficient number, since it is larger than the sum of its proper divisors (206955322630).

256105104122 is a wasteful number, since it uses less digits than its factorization.

256105104122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032 (or 2025 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 256105104122 its reverse (221401501652), we get a palindrome (477506605774).

The spelling of 256105104122 in words is "two hundred fifty-six billion, one hundred five million, one hundred four thousand, one hundred twenty-two".