121651370 has 32 divisors (see below), whose sum is σ = 229236480. Its totient is φ = 46393600.

The previous prime is 121651349. The next prime is 121651373. The reversal of 121651370 is 73156121.

It is not an unprimeable number, because it can be changed into a prime (121651373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91571 + ... + 92889.

It is an arithmetic number, because the mean of its divisors is an integer number (7163640).

Almost surely, 2^121651370 is an apocalyptic number.

121651370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121651370 is a deficient number, since it is larger than the sum of its proper divisors (107585110).

121651370 is a wasteful number, since it uses less digits than its factorization.

121651370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 121651370 is about 11029.5679879132. The cubic root of 121651370 is about 495.4946862265.

The spelling of 121651370 in words is "one hundred twenty-one million, six hundred fifty-one thousand, three hundred seventy".