102112012220221 has 8 divisors (see below), whose sum is σ = 106555077402624. Its totient is φ = 97669231410960.

The previous prime is 102112012220117. The next prime is 102112012220249. The reversal of 102112012220221 is 122022210211201.

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 102112012220221 - 2⁹ = 102112012219709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112012280221) 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, 70359346 + ... + 71795971.

It is an arithmetic number, because the mean of its divisors is an integer number (13319384675328).

Almost surely, 2^{102112012220221} is an apocalyptic number.

It is an amenable number.

102112012220221 is a deficient number, since it is larger than the sum of its proper divisors (4443065182403).

102112012220221 is a wasteful number, since it uses less digits than its factorization.

102112012220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142186571.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102112012220221 its reverse (122022210211201), we get a palindrome (224134222431422).

The spelling of 102112012220221 in words is "one hundred two trillion, one hundred twelve billion, twelve million, two hundred twenty thousand, two hundred twenty-one".