121220133102201 has 64 divisors (see below), whose sum is σ = 199708519680000. Its totient is φ = 63844501625856.

The previous prime is 121220133102169. The next prime is 121220133102223. The reversal of 121220133102201 is 102201331022121.

It is not a de Polignac number, because 121220133102201 - 2⁵ = 121220133102169 is a prime.

It is a super-2 number, since 2×121220133102201² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121220133102001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 198981601 + ... + 199589873.

It is an arithmetic number, because the mean of its divisors is an integer number (3120445620000).

Almost surely, 2^{121220133102201} is an apocalyptic number.

It is an amenable number.

121220133102201 is a deficient number, since it is larger than the sum of its proper divisors (78488386577799).

121220133102201 is a wasteful number, since it uses less digits than its factorization.

121220133102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621838.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121220133102201 its reverse (102201331022121), we get a palindrome (223421464124322).

The spelling of 121220133102201 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred thirty-three million, one hundred two thousand, two hundred one".