111010212000021 has 8 divisors (see below), whose sum is σ = 148015701247104. Its totient is φ = 74005765376480.

The previous prime is 111010212000019. The next prime is 111010212000049. The reversal of 111010212000021 is 120000212010111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111010212000021 - 2¹ = 111010212000019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111010211999970 and 111010212000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010212000091) 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, 260407416 + ... + 260833361.

It is an arithmetic number, because the mean of its divisors is an integer number (18501962655888).

Almost surely, 2^{111010212000021} is an apocalyptic number.

It is an amenable number.

111010212000021 is a deficient number, since it is larger than the sum of its proper divisors (37005489247083).

111010212000021 is an equidigital number, since it uses as much as digits as its factorization.

111010212000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521311771.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111010212000021 its reverse (120000212010111), we get a palindrome (231010424010132).

The spelling of 111010212000021 in words is "one hundred eleven trillion, ten billion, two hundred twelve million, twenty-one", and thus it is an aban number.