100121120212021 has 16 divisors (see below), whose sum is σ = 101328833880000. Its totient is φ = 98917704144000.

The previous prime is 100121120212019. The next prime is 100121120212031. The reversal of 100121120212021 is 120212021121001.

It is a cyclic number.

It is not a de Polignac number, because 100121120212021 - 2¹ = 100121120212019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121120211986 and 100121120212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121120212031) 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, 380935470 + ... + 381198208.

It is an arithmetic number, because the mean of its divisors is an integer number (6333052117500).

Almost surely, 2^{100121120212021} is an apocalyptic number.

It is an amenable number.

100121120212021 is a deficient number, since it is larger than the sum of its proper divisors (1207713667979).

100121120212021 is a wasteful number, since it uses less digits than its factorization.

100121120212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270900.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100121120212021 its reverse (120212021121001), we get a palindrome (220333141333022).

The spelling of 100121120212021 in words is "one hundred trillion, one hundred twenty-one billion, one hundred twenty million, two hundred twelve thousand, twenty-one".