21011010202 has 32 divisors (see below), whose sum is σ = 38842013952. Its totient is φ = 8300807424.

The previous prime is 21011010193. The next prime is 21011010211. The reversal of 21011010202 is 20201011012.

It is an interprime number because it is at equal distance from previous prime (21011010193) and next prime (21011010211).

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, 57538 + ... + 212914.

It is an arithmetic number, because the mean of its divisors is an integer number (1213812936).

Almost surely, 2^21011010202 is an apocalyptic number.

21011010202 is a deficient number, since it is larger than the sum of its proper divisors (17831003750).

21011010202 is a wasteful number, since it uses less digits than its factorization.

21011010202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156142.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21011010202 its reverse (20201011012), we get a palindrome (41212021214).

The spelling of 21011010202 in words is "twenty-one billion, eleven million, ten thousand, two hundred two".