102021232221191 has 4 divisors (see below), whose sum is σ = 102026213990400. Its totient is φ = 102016250451984.

The previous prime is 102021232221119. The next prime is 102021232221203. The reversal of 102021232221191 is 191122232120201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102021232221191 - 2³⁸ = 101746354314247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021232221091) 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, 2490853886 + ... + 2490894843.

It is an arithmetic number, because the mean of its divisors is an integer number (25506553497600).

Almost surely, 2^{102021232221191} is an apocalyptic number.

102021232221191 is a deficient number, since it is larger than the sum of its proper divisors (4981769209).

102021232221191 is an equidigital number, since it uses as much as digits as its factorization.

102021232221191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4981769208.

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 102021232221191 its reverse (191122232120201), we get a palindrome (293143464341392).

The spelling of 102021232221191 in words is "one hundred two trillion, twenty-one billion, two hundred thirty-two million, two hundred twenty-one thousand, one hundred ninety-one".