111021111202122 has 64 divisors (see below), whose sum is σ = 270018772531200. Its totient is φ = 33533175374640.

The previous prime is 111021111202117. The next prime is 111021111202123. The reversal of 111021111202122 is 221202111120111.

It is a happy number.

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 = 111021111202095 and 111021111202104.

It is not an unprimeable number, because it can be changed into a prime (111021111202123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304221922 + ... + 304586637.

It is an arithmetic number, because the mean of its divisors is an integer number (4219043320800).

Almost surely, 2^{111021111202122} is an apocalyptic number.

111021111202122 is an abundant number, since it is smaller than the sum of its proper divisors (158997661329078).

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

111021111202122 is a wasteful number, since it uses less digits than its factorization.

111021111202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608808888 (or 608808882 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111021111202122 its reverse (221202111120111), we get a palindrome (332223222322233).

The spelling of 111021111202122 in words is "one hundred eleven trillion, twenty-one billion, one hundred eleven million, two hundred two thousand, one hundred twenty-two".