121323401225 has 12 divisors (see below), whose sum is σ = 162013403916. Its totient is φ = 89592665280.

The previous prime is 121323401219. The next prime is 121323401231. The reversal of 121323401225 is 522104323121.

It is an interprime number because it is at equal distance from previous prime (121323401219) and next prime (121323401231).

It can be written as a sum of positive squares in 6 ways, for example, as 172764736 + 121150636489 = 13144^2 + 348067^2 .

It is not a de Polignac number, because 121323401225 - 2⁴ = 121323401209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121323401194 and 121323401203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186651062 + ... + 186651711.

It is an arithmetic number, because the mean of its divisors is an integer number (13501116993).

Almost surely, 2^121323401225 is an apocalyptic number.

It is an amenable number.

121323401225 is a deficient number, since it is larger than the sum of its proper divisors (40690002691).

121323401225 is a wasteful number, since it uses less digits than its factorization.

121323401225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373302796 (or 373302791 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 121323401225 its reverse (522104323121), we get a palindrome (643427724346).

The spelling of 121323401225 in words is "one hundred twenty-one billion, three hundred twenty-three million, four hundred one thousand, two hundred twenty-five".