102210211010121 has 4 divisors (see below), whose sum is σ = 136280281346832. Its totient is φ = 68140140673412.

The previous prime is 102210211010051. The next prime is 102210211010143. The reversal of 102210211010121 is 121010112012201.

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 102210211010121 - 2¹⁹ = 102210210485833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102210211010121.

It is not an unprimeable number, because it can be changed into a prime (102210211010161) 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, 17035035168351 + ... + 17035035168356.

It is an arithmetic number, because the mean of its divisors is an integer number (34070070336708).

Almost surely, 2^{102210211010121} is an apocalyptic number.

It is an amenable number.

102210211010121 is a deficient number, since it is larger than the sum of its proper divisors (34070070336711).

102210211010121 is an equidigital number, since it uses as much as digits as its factorization.

102210211010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34070070336710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102210211010121 its reverse (121010112012201), we get a palindrome (223220323022322).

The spelling of 102210211010121 in words is "one hundred two trillion, two hundred ten billion, two hundred eleven million, ten thousand, one hundred twenty-one".