100102221220021 has 16 divisors (see below), whose sum is σ = 106716455424000. Its totient is φ = 93677993733808.

The previous prime is 100102221220019. The next prime is 100102221220139. The reversal of 100102221220021 is 120022122201001.

It is a happy number.

It is not a de Polignac number, because 100102221220021 - 2¹ = 100102221220019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100102221219977 and 100102221220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100102221220621) 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, 14237161 + ... + 20072398.

It is an arithmetic number, because the mean of its divisors is an integer number (6669778464000).

Almost surely, 2^{100102221220021} is an apocalyptic number.

It is an amenable number.

100102221220021 is a deficient number, since it is larger than the sum of its proper divisors (6614234203979).

100102221220021 is a wasteful number, since it uses less digits than its factorization.

100102221220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34312328.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100102221220021 its reverse (120022122201001), we get a palindrome (220124343421022).

The spelling of 100102221220021 in words is "one hundred trillion, one hundred two billion, two hundred twenty-one million, two hundred twenty thousand, twenty-one".