21202100210210 has 16 divisors (see below), whose sum is σ = 38178068625792. Its totient is φ = 8477664918000.

The previous prime is 21202100210189. The next prime is 21202100210237. The reversal of 21202100210210 is 1201200120212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396867716 + ... + 396921135.

It is an arithmetic number, because the mean of its divisors is an integer number (2386129289112).

Almost surely, 2^{21202100210210} is an apocalyptic number.

21202100210210 is a deficient number, since it is larger than the sum of its proper divisors (16975968415582).

21202100210210 is a wasteful number, since it uses less digits than its factorization.

21202100210210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793791529.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21202100210210 its reverse (1201200120212), we get a palindrome (22403300330422).

The spelling of 21202100210210 in words is "twenty-one trillion, two hundred two billion, one hundred million, two hundred ten thousand, two hundred ten".