202021110122010 has 128 divisors (see below), whose sum is σ = 494558195249664. Its totient is φ = 52800306831360.

The previous prime is 202021110121981. The next prime is 202021110122023. The reversal of 202021110122010 is 10221011120202.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 607831234 + ... + 608163506.

It is an arithmetic number, because the mean of its divisors is an integer number (3863735900388).

Almost surely, 2^{202021110122010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202021110122010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247279097624832).

202021110122010 is an abundant number, since it is smaller than the sum of its proper divisors (292537085127654).

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

202021110122010 is a wasteful number, since it uses less digits than its factorization.

202021110122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333528.

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

Adding to 202021110122010 its reverse (10221011120202), we get a palindrome (212242121242212).

The spelling of 202021110122010 in words is "two hundred two trillion, twenty-one billion, one hundred ten million, one hundred twenty-two thousand, ten".