21201010120210 has 128 divisors (see below), whose sum is σ = 41240528904960. Its totient is φ = 7831733145600.

The previous prime is 21201010120201. The next prime is 21201010120313. The reversal of 21201010120210 is 1202101010212.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 129197974 + ... + 129361966.

It is an arithmetic number, because the mean of its divisors is an integer number (322191632070).

Almost surely, 2^{21201010120210} is an apocalyptic number.

21201010120210 is a deficient number, since it is larger than the sum of its proper divisors (20039518784750).

21201010120210 is a wasteful number, since it uses less digits than its factorization.

21201010120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164284.

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

Adding to 21201010120210 its reverse (1202101010212), we get a palindrome (22403111130422).

The spelling of 21201010120210 in words is "twenty-one trillion, two hundred one billion, ten million, one hundred twenty thousand, two hundred ten".