100202210110021 has 4 divisors (see below), whose sum is σ = 102532494066112. Its totient is φ = 97871926153932.

The previous prime is 100202210109973. The next prime is 100202210110031. The reversal of 100202210110021 is 120011012202001.

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 a cyclic number.

It is not a de Polignac number, because 100202210110021 - 2¹¹ = 100202210107973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100202210109983 and 100202210110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202210110031) 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, 1165141977981 + ... + 1165141978066.

It is an arithmetic number, because the mean of its divisors is an integer number (25633123516528).

Almost surely, 2^{100202210110021} is an apocalyptic number.

It is an amenable number.

100202210110021 is a deficient number, since it is larger than the sum of its proper divisors (2330283956091).

100202210110021 is an equidigital number, since it uses as much as digits as its factorization.

100202210110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330283956090.

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

Adding to 100202210110021 its reverse (120011012202001), we get a palindrome (220213222312022).

The spelling of 100202210110021 in words is "one hundred trillion, two hundred two billion, two hundred ten million, one hundred ten thousand, twenty-one".