21930484102284 has 24 divisors (see below), whose sum is σ = 51698666993008. Its totient is φ = 7234798878720.

The previous prime is 21930484102259. The next prime is 21930484102291. The reversal of 21930484102284 is 48220148403912.

It is a happy number.

It is a super-2 number, since 2×21930484102284² (a number of 27 digits) contains 22 as substring.

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, 9420309877 + ... + 9420312204.

Almost surely, 2^{21930484102284} is an apocalyptic number.

It is an amenable number.

21930484102284 is an abundant number, since it is smaller than the sum of its proper divisors (29768182890724).

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

21930484102284 is a wasteful number, since it uses less digits than its factorization.

21930484102284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18840622185 (or 18840622183 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 21930484102284 in words is "twenty-one trillion, nine hundred thirty billion, four hundred eighty-four million, one hundred two thousand, two hundred eighty-four".