201002200020121 has 8 divisors (see below), whose sum is σ = 212826002817384. Its totient is φ = 189178413219840.

The previous prime is 201002200020119. The next prime is 201002200020133. The reversal of 201002200020121 is 121020002200102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 77979408054025 + 123022791966096 = 8830595^2 + 11091564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201002200020121 - 2¹ = 201002200020119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201002200020101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30250381 + ... + 36291733.

It is an arithmetic number, because the mean of its divisors is an integer number (26603250352173).

Almost surely, 2^{201002200020121} is an apocalyptic number.

It is an amenable number.

201002200020121 is a deficient number, since it is larger than the sum of its proper divisors (11823802797263).

201002200020121 is a wasteful number, since it uses less digits than its factorization.

201002200020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7998491.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201002200020121 its reverse (121020002200102), we get a palindrome (322022202220223).

The spelling of 201002200020121 in words is "two hundred one trillion, two billion, two hundred million, twenty thousand, one hundred twenty-one".