120102210121 has 4 divisors (see below), whose sum is σ = 121165061652. Its totient is φ = 119039358592.

The previous prime is 120102210097. The next prime is 120102210157. The reversal of 120102210121 is 121012201021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 704318521 + 119397891600 = 26539^2 + 345540^2 .

It is a cyclic number.

It is not a de Polignac number, because 120102210121 - 2¹³ = 120102201929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120102210191) 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, 531425596 + ... + 531425821.

It is an arithmetic number, because the mean of its divisors is an integer number (30291265413).

Almost surely, 2^120102210121 is an apocalyptic number.

It is an amenable number.

120102210121 is a deficient number, since it is larger than the sum of its proper divisors (1062851531).

120102210121 is a wasteful number, since it uses less digits than its factorization.

120102210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062851530.

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

Adding to 120102210121 its reverse (121012201021), we get a palindrome (241114411142).

The spelling of 120102210121 in words is "one hundred twenty billion, one hundred two million, two hundred ten thousand, one hundred twenty-one".