21211010020210 has 64 divisors (see below), whose sum is σ = 39499782658560. Its totient is φ = 8195516974080.

The previous prime is 21211010020181. The next prime is 21211010020229. The reversal of 21211010020210 is 1202001011212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20408262 + ... + 21422398.

It is an arithmetic number, because the mean of its divisors is an integer number (617184104040).

Almost surely, 2^{21211010020210} is an apocalyptic number.

21211010020210 is a deficient number, since it is larger than the sum of its proper divisors (18288772638350).

21211010020210 is a wasteful number, since it uses less digits than its factorization.

21211010020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014691.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21211010020210 its reverse (1202001011212), we get a palindrome (22413011031422).

The spelling of 21211010020210 in words is "twenty-one trillion, two hundred eleven billion, ten million, twenty thousand, two hundred ten".