102210021202121 has 4 divisors (see below), whose sum is σ = 116811452802432. Its totient is φ = 87608589601812.

The previous prime is 102210021202007. The next prime is 102210021202151. The reversal of 102210021202121 is 121202120012201.

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-102210021202121 is a prime.

It is a super-3 number, since 3×102210021202121³ (a number of 43 digits) contains 333 as substring.

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 102210021202121.

It is not an unprimeable number, because it can be changed into a prime (102210021202151) 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, 7300715800145 + ... + 7300715800158.

It is an arithmetic number, because the mean of its divisors is an integer number (29202863200608).

Almost surely, 2^{102210021202121} is an apocalyptic number.

It is an amenable number.

102210021202121 is a deficient number, since it is larger than the sum of its proper divisors (14601431600311).

102210021202121 is an equidigital number, since it uses as much as digits as its factorization.

102210021202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14601431600310.

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

Adding to 102210021202121 its reverse (121202120012201), we get a palindrome (223412141214322).

The spelling of 102210021202121 in words is "one hundred two trillion, two hundred ten billion, twenty-one million, two hundred two thousand, one hundred twenty-one".