21210110022112 has 36 divisors (see below), whose sum is σ = 45898634273688. Its totient is φ = 9640959099200.

The previous prime is 21210110022107. The next prime is 21210110022151. The reversal of 21210110022112 is 21122001101212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2738904964 + ... + 2738912707.

It is an arithmetic number, because the mean of its divisors is an integer number (1274962063158).

Almost surely, 2^{21210110022112} is an apocalyptic number.

21210110022112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21210110022112 is an abundant number, since it is smaller than the sum of its proper divisors (24688524251576).

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

21210110022112 is a wasteful number, since it uses less digits than its factorization.

21210110022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5477817703 (or 5477817684 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21210110022112 its reverse (21122001101212), we get a palindrome (42332111123324).

The spelling of 21210110022112 in words is "twenty-one trillion, two hundred ten billion, one hundred ten million, twenty-two thousand, one hundred twelve".