100210202212121 has 4 divisors (see below), whose sum is σ = 105484423381200. Its totient is φ = 94935981043044.

The previous prime is 100210202212093. The next prime is 100210202212163. The reversal of 100210202212121 is 121212202012001.

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 a de Polignac number, because none of the positive numbers 2^k-100210202212121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100210202212121.

It is not an unprimeable number, because it can be changed into a prime (100210202212321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2637110584511 + ... + 2637110584548.

It is an arithmetic number, because the mean of its divisors is an integer number (26371105845300).

Almost surely, 2^{100210202212121} is an apocalyptic number.

It is an amenable number.

100210202212121 is a deficient number, since it is larger than the sum of its proper divisors (5274221169079).

100210202212121 is an equidigital number, since it uses as much as digits as its factorization.

100210202212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5274221169078.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 100210202212121 its reverse (121212202012001), we get a palindrome (221422404224122).

The spelling of 100210202212121 in words is "one hundred trillion, two hundred ten billion, two hundred two million, two hundred twelve thousand, one hundred twenty-one".