102122291 has 8 divisors (see below), whose sum is σ = 104915184. Its totient is φ = 99348480.

The previous prime is 102122243. The next prime is 102122299. The reversal of 102122291 is 192221201.

It is a happy number.

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 102122291 - 2⁶ = 102122227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102122299) 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, 6431 + ... + 15671.

It is an arithmetic number, because the mean of its divisors is an integer number (13114398).

Almost surely, 2^102122291 is an apocalyptic number.

102122291 is a deficient number, since it is larger than the sum of its proper divisors (2792893).

102122291 is an equidigital number, since it uses as much as digits as its factorization.

102122291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9541.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 102122291 is about 10105.5574314335. The cubic root of 102122291 is about 467.4195249775.

Adding to 102122291 its reverse (192221201), we get a palindrome (294343492).

The spelling of 102122291 in words is "one hundred two million, one hundred twenty-two thousand, two hundred ninety-one".