121149312 has 32 divisors (see below), whose sum is σ = 321803880. Its totient is φ = 40382976.

The previous prime is 121149311. The next prime is 121149313. The reversal of 121149312 is 213941121.

It is an interprime number because it is at equal distance from previous prime (121149311) and next prime (121149313).

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121149311) 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, 157363 + ... + 158130.

Almost surely, 2^121149312 is an apocalyptic number.

121149312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121149312 is an abundant number, since it is smaller than the sum of its proper divisors (200654568).

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

121149312 is an equidigital number, since it uses as much as digits as its factorization.

121149312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315510 (or 315498 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 121149312 is about 11006.7848166483. The cubic root of 121149312 is about 494.8121070374.

The spelling of 121149312 in words is "one hundred twenty-one million, one hundred forty-nine thousand, three hundred twelve".