201020021122110 has 128 divisors (see below), whose sum is σ = 540932840340480. Its totient is φ = 47510502672384.

The previous prime is 201020021122051. The next prime is 201020021122111. The reversal of 201020021122110 is 11221120020102.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201020021122110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020021122111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60492849 + ... + 63729308.

It is an arithmetic number, because the mean of its divisors is an integer number (4226037815160).

Almost surely, 2^{201020021122110} is an apocalyptic number.

201020021122110 is an abundant number, since it is smaller than the sum of its proper divisors (339912819218370).

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

201020021122110 is a wasteful number, since it uses less digits than its factorization.

201020021122110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124222370.

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

Adding to 201020021122110 its reverse (11221120020102), we get a palindrome (212241141142212).

The spelling of 201020021122110 in words is "two hundred one trillion, twenty billion, twenty-one million, one hundred twenty-two thousand, one hundred ten".