201220121010 has 64 divisors (see below), whose sum is σ = 486042549120. Its totient is φ = 53312878080.

The previous prime is 201220120991. The next prime is 201220121023. The reversal of 201220121010 is 10121022102.

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, 31102056 + ... + 31108524.

It is an arithmetic number, because the mean of its divisors is an integer number (7594414830).

Almost surely, 2^201220121010 is an apocalyptic number.

201220121010 is an abundant number, since it is smaller than the sum of its proper divisors (284822428110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201220121010 is a wasteful number, since it uses less digits than its factorization.

201220121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13003.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201220121010 its reverse (10121022102), we get a palindrome (211341143112).

The spelling of 201220121010 in words is "two hundred one billion, two hundred twenty million, one hundred twenty-one thousand, ten".