210212121120101 has 16 divisors (see below), whose sum is σ = 212207567779200. Its totient is φ = 208225074816000.

The previous prime is 210212121120097. The next prime is 210212121120143. The reversal of 210212121120101 is 101021121212012.

It is a cyclic number.

It is not a de Polignac number, because 210212121120101 - 2² = 210212121120097 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 210212121120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212121120401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135955565 + ... + 137493053.

It is an arithmetic number, because the mean of its divisors is an integer number (13262972986200).

Almost surely, 2^{210212121120101} is an apocalyptic number.

It is an amenable number.

210212121120101 is a deficient number, since it is larger than the sum of its proper divisors (1995446659099).

210212121120101 is a wasteful number, since it uses less digits than its factorization.

210212121120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540220.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210212121120101 its reverse (101021121212012), we get a palindrome (311233242332113).

The spelling of 210212121120101 in words is "two hundred ten trillion, two hundred twelve billion, one hundred twenty-one million, one hundred twenty thousand, one hundred one".