100001202020121 has 16 divisors (see below), whose sum is σ = 136939254148224. Its totient is φ = 64865326616064.

The previous prime is 100001202020117. The next prime is 100001202020143. The reversal of 100001202020121 is 121020202100001.

It is not a de Polignac number, because 100001202020121 - 2² = 100001202020117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100001202020097 and 100001202020106.

It is not an unprimeable number, because it can be changed into a prime (100001202020171) 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, 21701380 + ... + 25902746.

It is an arithmetic number, because the mean of its divisors is an integer number (8558703384264).

Almost surely, 2^{100001202020121} is an apocalyptic number.

It is an amenable number.

100001202020121 is a deficient number, since it is larger than the sum of its proper divisors (36938052128103).

100001202020121 is a wasteful number, since it uses less digits than its factorization.

100001202020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4415840.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100001202020121 its reverse (121020202100001), we get a palindrome (221021404120122).

The spelling of 100001202020121 in words is "one hundred trillion, one billion, two hundred two million, twenty thousand, one hundred twenty-one".