100120121002221 has 16 divisors (see below), whose sum is σ = 139300658583936. Its totient is φ = 63843294499776.

The previous prime is 100120121002151. The next prime is 100120121002229. The reversal of 100120121002221 is 122200121021001.

It is not a de Polignac number, because 100120121002221 - 2⁹ = 100120121001709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100120121002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120121002229) 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, 13011850 + ... + 19223643.

It is an arithmetic number, because the mean of its divisors is an integer number (8706291161496).

Almost surely, 2^{100120121002221} is an apocalyptic number.

It is an amenable number.

100120121002221 is a deficient number, since it is larger than the sum of its proper divisors (39180537581715).

100120121002221 is a wasteful number, since it uses less digits than its factorization.

100120121002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32280532.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100120121002221 its reverse (122200121021001), we get a palindrome (222320242023222).

The spelling of 100120121002221 in words is "one hundred trillion, one hundred twenty billion, one hundred twenty-one million, two thousand, two hundred twenty-one".