20111222111022 has 64 divisors (see below), whose sum is σ = 51090897661440. Its totient is φ = 5744400933888.

The previous prime is 20111222111011. The next prime is 20111222111051. The reversal of 20111222111022 is 22011122211102.

20111222111022 is a `hidden beast` number, since 201 + 112 + 221 + 110 + 22 = 666.

It is a super-2 number, since 2×20111222111022² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20111222110986 and 20111222111004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6388408 + ... + 9001899.

It is an arithmetic number, because the mean of its divisors is an integer number (798295275960).

Almost surely, 2^{20111222111022} is an apocalyptic number.

20111222111022 is an abundant number, since it is smaller than the sum of its proper divisors (30979675550418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111222111022 is a wasteful number, since it uses less digits than its factorization.

20111222111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15393782 (or 15393776 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20111222111022 its reverse (22011122211102), we get a palindrome (42122344322124).

It can be divided in two parts, 2011122211102 and 2, that multiplied together give a palindrome (4022244422204).

The spelling of 20111222111022 in words is "twenty trillion, one hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, twenty-two".