21012210010210 has 64 divisors (see below), whose sum is σ = 39570713650944. Its totient is φ = 8018213632000.

The previous prime is 21012210010139. The next prime is 21012210010213. The reversal of 21012210010210 is 1201001221012.

It is not an unprimeable number, because it can be changed into a prime (21012210010213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 853760805 + ... + 853785415.

It is an arithmetic number, because the mean of its divisors is an integer number (618292400796).

Almost surely, 2^{21012210010210} is an apocalyptic number.

21012210010210 is a deficient number, since it is larger than the sum of its proper divisors (18558503640734).

21012210010210 is a wasteful number, since it uses less digits than its factorization.

21012210010210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34299.

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

Adding to 21012210010210 its reverse (1201001221012), we get a palindrome (22213211231222).

The spelling of 21012210010210 in words is "twenty-one trillion, twelve billion, two hundred ten million, ten thousand, two hundred ten".