21150535302 has 48 divisors (see below), whose sum is σ = 50498976528. Its totient is φ = 6356508480.

The previous prime is 21150535223. The next prime is 21150535319. The reversal of 21150535302 is 20353505112.

It is a happy number.

It is a super-2 number, since 2×21150535302² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 1040949 + ... + 1061072.

It is an arithmetic number, because the mean of its divisors is an integer number (1052062011).

Almost surely, 2^21150535302 is an apocalyptic number.

21150535302 is an abundant number, since it is smaller than the sum of its proper divisors (29348441226).

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

21150535302 is a wasteful number, since it uses less digits than its factorization.

21150535302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102085 (or 2102082 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 21150535302 in words is "twenty-one billion, one hundred fifty million, five hundred thirty-five thousand, three hundred two".