121312302 has 32 divisors (see below), whose sum is σ = 258491520. Its totient is φ = 37844640.

The previous prime is 121312297. The next prime is 121312339. The reversal of 121312302 is 203213121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3052 + ... + 15872.

It is an arithmetic number, because the mean of its divisors is an integer number (8077860).

Almost surely, 2^121312302 is an apocalyptic number.

121312302 is an abundant number, since it is smaller than the sum of its proper divisors (137179218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121312302 is a wasteful number, since it uses less digits than its factorization.

121312302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 121312302 is about 11014.1863975511. The cubic root of 121312302 is about 495.0339085026.

Adding to 121312302 its reverse (203213121), we get a palindrome (324525423).

The spelling of 121312302 in words is "one hundred twenty-one million, three hundred twelve thousand, three hundred two".