111212021011120 has 40 divisors (see below), whose sum is σ = 258853029448464. Its totient is φ = 44435762280192.

The previous prime is 111212021011061. The next prime is 111212021011123. The reversal of 111212021011120 is 21110120212111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×111212021011120² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 111212021011094 and 111212021011103.

It is not an unprimeable number, because it can be changed into a prime (111212021011123) 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, 766272679 + ... + 766417798.

Almost surely, 2^{111212021011120} is an apocalyptic number.

111212021011120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212021011120 is an abundant number, since it is smaller than the sum of its proper divisors (147641008437344).

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

111212021011120 is a wasteful number, since it uses less digits than its factorization.

111212021011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532691397 (or 1532691391 counting only the distinct ones).

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

Adding to 111212021011120 its reverse (21110120212111), we get a palindrome (132322141223231).

The spelling of 111212021011120 in words is "one hundred eleven trillion, two hundred twelve billion, twenty-one million, eleven thousand, one hundred twenty".