210100101102121 has 4 divisors (see below), whose sum is σ = 213059257455744. Its totient is φ = 207140944748500.

The previous prime is 210100101102053. The next prime is 210100101102131. The reversal of 210100101102121 is 121201101001012.

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 210100101102121 - 2⁹ = 210100101101609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210100101102131) 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, 1479578176705 + ... + 1479578176846.

It is an arithmetic number, because the mean of its divisors is an integer number (53264814363936).

Almost surely, 2^{210100101102121} is an apocalyptic number.

It is an amenable number.

210100101102121 is a deficient number, since it is larger than the sum of its proper divisors (2959156353623).

210100101102121 is an equidigital number, since it uses as much as digits as its factorization.

210100101102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959156353622.

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

Adding to 210100101102121 its reverse (121201101001012), we get a palindrome (331301202103133).

The spelling of 210100101102121 in words is "two hundred ten trillion, one hundred billion, one hundred one million, one hundred two thousand, one hundred twenty-one".