100121020220121 has 16 divisors (see below), whose sum is σ = 133588847088000. Its totient is φ = 66700286684928.

The previous prime is 100121020220119. The next prime is 100121020220261. The reversal of 100121020220121 is 121022020121001.

It is not a de Polignac number, because 100121020220121 - 2¹ = 100121020220119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100121020220121.

It is not an unprimeable number, because it can be changed into a prime (100121020220621) 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, 22083105 + ... + 26227953.

It is an arithmetic number, because the mean of its divisors is an integer number (8349302943000).

Almost surely, 2^{100121020220121} is an apocalyptic number.

It is an amenable number.

100121020220121 is a deficient number, since it is larger than the sum of its proper divisors (33467826867879).

100121020220121 is a wasteful number, since it uses less digits than its factorization.

100121020220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150528.

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

Adding to 100121020220121 its reverse (121022020121001), we get a palindrome (221143040341122).

The spelling of 100121020220121 in words is "one hundred trillion, one hundred twenty-one billion, twenty million, two hundred twenty thousand, one hundred twenty-one".