201121201200013 has 4 divisors (see below), whose sum is σ = 201249549128320. Its totient is φ = 200992853271708.

The previous prime is 201121201199909. The next prime is 201121201200041. The reversal of 201121201200013 is 310002102121102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201121201200013 - 2³³ = 201112611265421 is a prime.

It is a super-2 number, since 2×201121201200013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201121201200013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121201200613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64173961803 + ... + 64173964936.

It is an arithmetic number, because the mean of its divisors is an integer number (50312387282080).

Almost surely, 2^{201121201200013} is an apocalyptic number.

It is an amenable number.

201121201200013 is a deficient number, since it is larger than the sum of its proper divisors (128347928307).

201121201200013 is a wasteful number, since it uses less digits than its factorization.

201121201200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128347928306.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 201121201200013 its reverse (310002102121102), we get a palindrome (511123303321115).

The spelling of 201121201200013 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred one million, two hundred thousand, thirteen".