21050265202 has 8 divisors (see below), whose sum is σ = 31582058112. Its totient is φ = 10522912500.

The previous prime is 21050265133. The next prime is 21050265211. The reversal of 21050265202 is 20256205012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21050265202² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098174 + ... + 1117177.

It is an arithmetic number, because the mean of its divisors is an integer number (3947757264).

Almost surely, 2^21050265202 is an apocalyptic number.

21050265202 is a deficient number, since it is larger than the sum of its proper divisors (10531792910).

21050265202 is a wasteful number, since it uses less digits than its factorization.

21050265202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220104.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 21050265202 in words is "twenty-one billion, fifty million, two hundred sixty-five thousand, two hundred two".