21222416125116 has 36 divisors (see below), whose sum is σ = 53646360395992. Its totient is φ = 7074032089824.

The previous prime is 21222416124983. The next prime is 21222416125123. The reversal of 21222416125116 is 61152161422212.

21222416125116 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 2 + 416 + 125 + 116 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2002306 + ... + 6815721.

Almost surely, 2^{21222416125116} is an apocalyptic number.

It is an amenable number.

21222416125116 is an abundant number, since it is smaller than the sum of its proper divisors (32423944270876).

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

21222416125116 is a wasteful number, since it uses less digits than its factorization.

21222416125116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8884890 (or 8884885 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

Adding to 21222416125116 its reverse (61152161422212), we get a palindrome (82374577547328).

The spelling of 21222416125116 in words is "twenty-one trillion, two hundred twenty-two billion, four hundred sixteen million, one hundred twenty-five thousand, one hundred sixteen".