21226702116 has 24 divisors (see below), whose sum is σ = 51682405824. Its totient is φ = 6767933920.

The previous prime is 21226702099. The next prime is 21226702121. The reversal of 21226702116 is 61120762212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38453895 + ... + 38454446.

It is an arithmetic number, because the mean of its divisors is an integer number (2153433576).

Almost surely, 2^21226702116 is an apocalyptic number.

It is an amenable number.

21226702116 is an abundant number, since it is smaller than the sum of its proper divisors (30455703708).

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

21226702116 is a wasteful number, since it uses less digits than its factorization.

21226702116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76908371 (or 76908369 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 21226702116 in words is "twenty-one billion, two hundred twenty-six million, seven hundred two thousand, one hundred sixteen".