102010121221 has 8 divisors (see below), whose sum is σ = 102246429600. Its totient is φ = 101774061840.

The previous prime is 102010121197. The next prime is 102010121261. The reversal of 102010121221 is 122121010201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102010121221 - 2⁷ = 102010121093 is a prime.

It is a super-2 number, since 2×102010121221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102010121261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770910 + ... + 893488.

It is an arithmetic number, because the mean of its divisors is an integer number (12780803700).

Almost surely, 2^102010121221 is an apocalyptic number.

It is an amenable number.

102010121221 is a deficient number, since it is larger than the sum of its proper divisors (236308379).

102010121221 is a wasteful number, since it uses less digits than its factorization.

102010121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124499.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102010121221 its reverse (122121010201), we get a palindrome (224131131422).

The spelling of 102010121221 in words is "one hundred two billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".