100111010202121 has 4 divisors (see below), whose sum is σ = 100112360227200. Its totient is φ = 100109660177044.

The previous prime is 100111010202103. The next prime is 100111010202157. The reversal of 100111010202121 is 121202010111001.

It is a happy number.

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 100111010202121 - 2¹¹ = 100111010200073 is a prime.

It is a super-3 number, since 3×100111010202121³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100111010202421) 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, 674901301 + ... + 675049618.

It is an arithmetic number, because the mean of its divisors is an integer number (25028090056800).

Almost surely, 2^{100111010202121} is an apocalyptic number.

It is an amenable number.

100111010202121 is a deficient number, since it is larger than the sum of its proper divisors (1350025079).

100111010202121 is an equidigital number, since it uses as much as digits as its factorization.

100111010202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350025078.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100111010202121 its reverse (121202010111001), we get a palindrome (221313020313122).

The spelling of 100111010202121 in words is "one hundred trillion, one hundred eleven billion, ten million, two hundred two thousand, one hundred twenty-one".