100102021210021 has 4 divisors (see below), whose sum is σ = 100104213254752. Its totient is φ = 100099829165292.

The previous prime is 100102021210003. The next prime is 100102021210039. The reversal of 100102021210021 is 120012120201001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (100102021210003) and next prime (100102021210039).

It is a cyclic number.

It is not a de Polignac number, because 100102021210021 - 2¹⁵ = 100102021177253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100102021209983 and 100102021210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100102021210001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1095953865 + ... + 1096045198.

It is an arithmetic number, because the mean of its divisors is an integer number (25026053313688).

Almost surely, 2^{100102021210021} is an apocalyptic number.

It is an amenable number.

100102021210021 is a deficient number, since it is larger than the sum of its proper divisors (2192044731).

100102021210021 is an equidigital number, since it uses as much as digits as its factorization.

100102021210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192044730.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100102021210021 its reverse (120012120201001), we get a palindrome (220114141411022).

The spelling of 100102021210021 in words is "one hundred trillion, one hundred two billion, twenty-one million, two hundred ten thousand, twenty-one".