2102201120121 has 4 divisors (see below), whose sum is σ = 2802934826832. Its totient is φ = 1401467413412.

The previous prime is 2102201120087. The next prime is 2102201120147. The reversal of 2102201120121 is 1210211022012.

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 2102201120121 - 2⁶ = 2102201120057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102201120121.

It is not an unprimeable number, because it can be changed into a prime (2102201122121) 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, 350366853351 + ... + 350366853356.

It is an arithmetic number, because the mean of its divisors is an integer number (700733706708).

Almost surely, 2^{2102201120121} is an apocalyptic number.

It is an amenable number.

2102201120121 is a deficient number, since it is larger than the sum of its proper divisors (700733706711).

2102201120121 is an equidigital number, since it uses as much as digits as its factorization.

2102201120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700733706710.

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

Adding to 2102201120121 its reverse (1210211022012), we get a palindrome (3312412142133).

The spelling of 2102201120121 in words is "two trillion, one hundred two billion, two hundred one million, one hundred twenty thousand, one hundred twenty-one".