20111120122 has 8 divisors (see below), whose sum is σ = 31941190836. Its totient is φ = 9464056512.

The previous prime is 20111120111. The next prime is 20111120143. The reversal of 20111120122 is 22102111102.

It can be written as a sum of positive squares in 2 ways, for example, as 15805266961 + 4305853161 = 125719^2 + 65619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 295751733 + ... + 295751800.

Almost surely, 2^20111120122 is an apocalyptic number.

20111120122 is a deficient number, since it is larger than the sum of its proper divisors (11830070714).

20111120122 is a wasteful number, since it uses less digits than its factorization.

20111120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591503552.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20111120122 its reverse (22102111102), we get a palindrome (42213231224).

The spelling of 20111120122 in words is "twenty billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty-two".