100202211222121 has 4 divisors (see below), whose sum is σ = 100204413368832. Its totient is φ = 100200009075412.

The previous prime is 100202211222067. The next prime is 100202211222161. The reversal of 100202211222121 is 121222112202001.

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 100202211222121 - 2¹⁷ = 100202211091049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100202211222161) 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, 1101005101 + ... + 1101096106.

It is an arithmetic number, because the mean of its divisors is an integer number (25051103342208).

Almost surely, 2^{100202211222121} is an apocalyptic number.

It is an amenable number.

100202211222121 is a deficient number, since it is larger than the sum of its proper divisors (2202146711).

100202211222121 is an equidigital number, since it uses as much as digits as its factorization.

100202211222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202146710.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 100202211222121 its reverse (121222112202001), we get a palindrome (221424323424122).

The spelling of 100202211222121 in words is "one hundred trillion, two hundred two billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty-one".