201002101121020 has 96 divisors (see below), whose sum is σ = 430477223694336. Its totient is φ = 78815034681600.

The previous prime is 201002101121011. The next prime is 201002101121021. The reversal of 201002101121020 is 20121101200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002101121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2385371409 + ... + 2385455671.

It is an arithmetic number, because the mean of its divisors is an integer number (4484137746816).

Almost surely, 2^{201002101121020} is an apocalyptic number.

201002101121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201002101121020 is an abundant number, since it is smaller than the sum of its proper divisors (229475122573316).

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

201002101121020 is a wasteful number, since it uses less digits than its factorization.

201002101121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90931 (or 90929 counting only the distinct ones).

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

Adding to 201002101121020 its reverse (20121101200102), we get a palindrome (221123202321122).

The spelling of 201002101121020 in words is "two hundred one trillion, two billion, one hundred one million, one hundred twenty-one thousand, twenty".