111022121012 has 24 divisors (see below), whose sum is σ = 213932184480. Its totient is φ = 49992966560.

The previous prime is 111022121011. The next prime is 111022121039. The reversal of 111022121012 is 210121220111.

It is a super-2 number, since 2×111022121012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022121011) 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, 11786087 + ... + 11795502.

It is an arithmetic number, because the mean of its divisors is an integer number (8913841020).

Almost surely, 2^111022121012 is an apocalyptic number.

It is an amenable number.

111022121012 is a deficient number, since it is larger than the sum of its proper divisors (102910063468).

111022121012 is a wasteful number, since it uses less digits than its factorization.

111022121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23581711 (or 23581709 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111022121012 its reverse (210121220111), we get a palindrome (321143341123).

Subtracting 111022121012 from its reverse (210121220111), we obtain a palindrome (99099099099).

It can be divided in two parts, 1110 and 22121012, that added together give a palindrome (22122122).

The spelling of 111022121012 in words is "one hundred eleven billion, twenty-two million, one hundred twenty-one thousand, twelve".