121220113231101 has 32 divisors (see below), whose sum is σ = 163309496232960. Its totient is φ = 79974355636224.

The previous prime is 121220113231039. The next prime is 121220113231171. The reversal of 121220113231101 is 101132311022121.

It is not a de Polignac number, because 121220113231101 - 2⁶ = 121220113231037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220113231171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 765542505 + ... + 765700833.

It is an arithmetic number, because the mean of its divisors is an integer number (5103421757280).

Almost surely, 2^{121220113231101} is an apocalyptic number.

It is an amenable number.

121220113231101 is a deficient number, since it is larger than the sum of its proper divisors (42089383001859).

121220113231101 is a wasteful number, since it uses less digits than its factorization.

121220113231101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161925.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 121220113231101 its reverse (101132311022121), we get a palindrome (222352424253222).

The spelling of 121220113231101 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred thirteen million, two hundred thirty-one thousand, one hundred one".