121701610 has 16 divisors (see below), whose sum is σ = 224158176. Its totient is φ = 47548368.

The previous prime is 121701557. The next prime is 121701611. The reversal of 121701610 is 16107121.

It is a super-2 number, since 2×121701610² = 29622563753184200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121701611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141084 + ... + 141943.

It is an arithmetic number, because the mean of its divisors is an integer number (14009886).

Almost surely, 2^121701610 is an apocalyptic number.

121701610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121701610 is a deficient number, since it is larger than the sum of its proper divisors (102456566).

121701610 is a wasteful number, since it uses less digits than its factorization.

121701610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283077.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 121701610 is about 11031.8452672252. The cubic root of 121701610 is about 495.5628872037.

Adding to 121701610 its reverse (16107121), we get a palindrome (137808731).

The spelling of 121701610 in words is "one hundred twenty-one million, seven hundred one thousand, six hundred ten".