201021210122010 has 64 divisors (see below), whose sum is σ = 492247060018560. Its totient is φ = 52520047407360.

The previous prime is 201021210121909. The next prime is 201021210122093. The reversal of 201021210122010 is 10221012120102.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 88032376 + ... + 90286995.

It is an arithmetic number, because the mean of its divisors is an integer number (7691360312790).

Almost surely, 2^{201021210122010} is an apocalyptic number.

201021210122010 is an abundant number, since it is smaller than the sum of its proper divisors (291225849896550).

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

201021210122010 is a wasteful number, since it uses less digits than its factorization.

201021210122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178320143.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201021210122010 its reverse (10221012120102), we get a palindrome (211242222242112).

The spelling of 201021210122010 in words is "two hundred one trillion, twenty-one billion, two hundred ten million, one hundred twenty-two thousand, ten".