111412134021 has 12 divisors (see below), whose sum is σ = 155289000608. Its totient is φ = 71045417784.

The previous prime is 111412134019. The next prime is 111412134037. The reversal of 111412134021 is 120431214111.

It is not a de Polignac number, because 111412134021 - 2¹ = 111412134019 is a prime.

It is a super-2 number, since 2×111412134021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111412134221) 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, 35099905 + ... + 35103078.

Almost surely, 2^111412134021 is an apocalyptic number.

It is an amenable number.

111412134021 is a deficient number, since it is larger than the sum of its proper divisors (43876866587).

111412134021 is an equidigital number, since it uses as much as digits as its factorization.

111412134021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70203032 (or 70203009 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 111412134021 its reverse (120431214111), we get a palindrome (231843348132).

The spelling of 111412134021 in words is "one hundred eleven billion, four hundred twelve million, one hundred thirty-four thousand, twenty-one".