111311021030 has 128 divisors (see below), whose sum is σ = 236825856000. Its totient is φ = 37241881600.

The previous prime is 111311021021. The next prime is 111311021051. The reversal of 111311021030 is 30120113111.

It is a happy number.

It is a super-2 number, since 2×111311021030² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111311020996 and 111311021014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20614271 + ... + 20619669.

It is an arithmetic number, because the mean of its divisors is an integer number (1850202000).

Almost surely, 2^111311021030 is an apocalyptic number.

111311021030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111311021030 is an abundant number, since it is smaller than the sum of its proper divisors (125514834970).

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

111311021030 is a wasteful number, since it uses less digits than its factorization.

111311021030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5750.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 111311021030 its reverse (30120113111), we get a palindrome (141431134141).

The spelling of 111311021030 in words is "one hundred eleven billion, three hundred eleven million, twenty-one thousand, thirty".