121312570 has 8 divisors (see below), whose sum is σ = 218362644. Its totient is φ = 48525024.

The previous prime is 121312547. The next prime is 121312577. The reversal of 121312570 is 75213121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 98664489 + 22648081 = 9933^2 + 4759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121312577) 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, 6065619 + ... + 6065638.

Almost surely, 2^121312570 is an apocalyptic number.

121312570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121312570 is a deficient number, since it is larger than the sum of its proper divisors (97050074).

121312570 is a wasteful number, since it uses less digits than its factorization.

121312570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12131264.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 121312570 is about 11014.1985636723. The cubic root of 121312570 is about 495.0342730410.

Adding to 121312570 its reverse (75213121), we get a palindrome (196525691).

The spelling of 121312570 in words is "one hundred twenty-one million, three hundred twelve thousand, five hundred seventy".