21124432223196 has 48 divisors (see below), whose sum is σ = 52277783763744. Its totient is φ = 6616096976896.

The previous prime is 21124432223177. The next prime is 21124432223207. The reversal of 21124432223196 is 69132223442112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87190275 + ... + 87432218.

It is an arithmetic number, because the mean of its divisors is an integer number (1089120495078).

Almost surely, 2^{21124432223196} is an apocalyptic number.

It is an amenable number.

21124432223196 is an abundant number, since it is smaller than the sum of its proper divisors (31153351540548).

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

21124432223196 is a wasteful number, since it uses less digits than its factorization.

21124432223196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174623110 (or 174623108 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The spelling of 21124432223196 in words is "twenty-one trillion, one hundred twenty-four billion, four hundred thirty-two million, two hundred twenty-three thousand, one hundred ninety-six".