120102200121221 has 16 divisors (see below), whose sum is σ = 122662950294528. Its totient is φ = 117565787631600.

The previous prime is 120102200121179. The next prime is 120102200121287. The reversal of 120102200121221 is 122121002201021.

It is a cyclic number.

It is not a de Polignac number, because 120102200121221 - 2³⁰ = 120101126379397 is a prime.

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 120102200121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102200721221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2483876 + ... + 15696306.

It is an arithmetic number, because the mean of its divisors is an integer number (7666434393408).

Almost surely, 2^{120102200121221} is an apocalyptic number.

It is an amenable number.

120102200121221 is a deficient number, since it is larger than the sum of its proper divisors (2560750173307).

120102200121221 is a wasteful number, since it uses less digits than its factorization.

120102200121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13213352.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120102200121221 its reverse (122121002201021), we get a palindrome (242223202322242).

The spelling of 120102200121221 in words is "one hundred twenty trillion, one hundred two billion, two hundred million, one hundred twenty-one thousand, two hundred twenty-one".