20122356256 has 24 divisors (see below), whose sum is σ = 39650025744. Its totient is φ = 10052508480.

The previous prime is 20122356229. The next prime is 20122356271. The reversal of 20122356256 is 65265322102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233130 + ... + 307561.

It is an arithmetic number, because the mean of its divisors is an integer number (1652084406).

Almost surely, 2^20122356256 is an apocalyptic number.

It is an amenable number.

20122356256 is a deficient number, since it is larger than the sum of its proper divisors (19527669488).

20122356256 is a wasteful number, since it uses less digits than its factorization.

20122356256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541864 (or 541856 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 20122356256 its reverse (65265322102), we get a palindrome (85387678358).

The spelling of 20122356256 in words is "twenty billion, one hundred twenty-two million, three hundred fifty-six thousand, two hundred fifty-six".