121522231 has 2 divisors, whose sum is σ = 121522232. Its totient is φ = 121522230.

The previous prime is 121522229. The next prime is 121522243. The reversal of 121522231 is 132225121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121522231 - 2¹ = 121522229 is a prime.

It is a super-2 number, since 2×121522231² = 29535305254434722, which contains 22 as substring.

Together with 121522229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 121522199 and 121522208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121522211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60761115 + 60761116.

It is an arithmetic number, because the mean of its divisors is an integer number (60761116).

Almost surely, 2^121522231 is an apocalyptic number.

121522231 is a deficient number, since it is larger than the sum of its proper divisors (1).

121522231 is an equidigital number, since it uses as much as digits as its factorization.

121522231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 19.

The square root of 121522231 is about 11023.7122150390. The cubic root of 121522231 is about 495.3192933705.

Adding to 121522231 its reverse (132225121), we get a palindrome (253747352).

The spelling of 121522231 in words is "one hundred twenty-one million, five hundred twenty-two thousand, two hundred thirty-one".