121020211211001 has 16 divisors (see below), whose sum is σ = 173995682360640. Its totient is φ = 74569578151680.

The previous prime is 121020211210993. The next prime is 121020211211017. The reversal of 121020211211001 is 100112112020121.

It is a happy number.

It is not a de Polignac number, because 121020211211001 - 2³ = 121020211210993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121020211216001) 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, 25892212300 + ... + 25892216973.

It is an arithmetic number, because the mean of its divisors is an integer number (10874730147540).

Almost surely, 2^{121020211211001} is an apocalyptic number.

It is an amenable number.

121020211211001 is a deficient number, since it is larger than the sum of its proper divisors (52975471149639).

121020211211001 is a wasteful number, since it uses less digits than its factorization.

121020211211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51784429336.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121020211211001 its reverse (100112112020121), we get a palindrome (221132323231122).

The spelling of 121020211211001 in words is "one hundred twenty-one trillion, twenty billion, two hundred eleven million, two hundred eleven thousand, one".