120121000202121 has 4 divisors (see below), whose sum is σ = 160161333602832. Its totient is φ = 80080666801412.

The previous prime is 120121000202117. The next prime is 120121000202143. The reversal of 120121000202121 is 121202000121021.

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 120121000202121 - 2² = 120121000202117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120121000202121.

It is not an unprimeable number, because it can be changed into a prime (120121000202111) 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, 20020166700351 + ... + 20020166700356.

It is an arithmetic number, because the mean of its divisors is an integer number (40040333400708).

Almost surely, 2^{120121000202121} is an apocalyptic number.

It is an amenable number.

120121000202121 is a deficient number, since it is larger than the sum of its proper divisors (40040333400711).

120121000202121 is an equidigital number, since it uses as much as digits as its factorization.

120121000202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40040333400710.

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

Adding to 120121000202121 its reverse (121202000121021), we get a palindrome (241323000323142).

The spelling of 120121000202121 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred two thousand, one hundred twenty-one".