21143032122 has 32 divisors (see below), whose sum is σ = 42888545280. Its totient is φ = 6947544240.

The previous prime is 21143032093. The next prime is 21143032153. The reversal of 21143032122 is 22123034112.

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, 270097 + ... + 339467.

It is an arithmetic number, because the mean of its divisors is an integer number (1340267040).

Almost surely, 2^21143032122 is an apocalyptic number.

21143032122 is an abundant number, since it is smaller than the sum of its proper divisors (21745513158).

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

21143032122 is a wasteful number, since it uses less digits than its factorization.

21143032122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70098.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21143032122 its reverse (22123034112), we get a palindrome (43266066234).

The spelling of 21143032122 in words is "twenty-one billion, one hundred forty-three million, thirty-two thousand, one hundred twenty-two".