102000210111221 has 4 divisors (see below), whose sum is σ = 102000250988832. Its totient is φ = 102000169233612.

The previous prime is 102000210111199. The next prime is 102000210111227. The reversal of 102000210111221 is 122111012000201.

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 102000210111221 - 2⁶ = 102000210111157 is a prime.

It is a super-2 number, since 2×102000210111221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102000210111196 and 102000210111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000210111227) 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, 16434401 + ... + 21773606.

It is an arithmetic number, because the mean of its divisors is an integer number (25500062747208).

Almost surely, 2^{102000210111221} is an apocalyptic number.

It is an amenable number.

102000210111221 is a deficient number, since it is larger than the sum of its proper divisors (40877611).

102000210111221 is an equidigital number, since it uses as much as digits as its factorization.

102000210111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40877610.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102000210111221 its reverse (122111012000201), we get a palindrome (224111222111422).

The spelling of 102000210111221 in words is "one hundred two trillion, two hundred ten million, one hundred eleven thousand, two hundred twenty-one".