21135422322 has 48 divisors (see below), whose sum is σ = 52711888320. Its totient is φ = 5995243296.

The previous prime is 21135422317. The next prime is 21135422333. The reversal of 21135422322 is 22322453112.

21135422322 is a `hidden beast` number, since 2 + 113 + 542 + 2 + 3 + 2 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 585873 + ... + 620900.

It is an arithmetic number, because the mean of its divisors is an integer number (1098164340).

Almost surely, 2^21135422322 is an apocalyptic number.

21135422322 is an abundant number, since it is smaller than the sum of its proper divisors (31576465998).

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

21135422322 is a wasteful number, since it uses less digits than its factorization.

21135422322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206927 (or 1206924 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 21135422322 its reverse (22322453112), we get a palindrome (43457875434).

The spelling of 21135422322 in words is "twenty-one billion, one hundred thirty-five million, four hundred twenty-two thousand, three hundred twenty-two".