111110021212122 has 24 divisors (see below), whose sum is σ = 243121927606740. Its totient is φ = 36669973996800.

The previous prime is 111110021212049. The next prime is 111110021212123. The reversal of 111110021212122 is 221212120011111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 109639935286281 + 1470085925841 = 10470909^2 + 1212471^2 .

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 = 111110021212095 and 111110021212104.

It is not an unprimeable number, because it can be changed into a prime (111110021212123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30558309847 + ... + 30558313482.

Almost surely, 2^{111110021212122} is an apocalyptic number.

111110021212122 is an abundant number, since it is smaller than the sum of its proper divisors (132011906394618).

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

111110021212122 is a wasteful number, since it uses less digits than its factorization.

111110021212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61116623438 (or 61116623435 counting only the distinct ones).

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

Adding to 111110021212122 its reverse (221212120011111), we get a palindrome (332322141223233).

The spelling of 111110021212122 in words is "one hundred eleven trillion, one hundred ten billion, twenty-one million, two hundred twelve thousand, one hundred twenty-two".