121013870 has 16 divisors (see below), whose sum is σ = 219490128. Its totient is φ = 48035520.

The previous prime is 121013819. The next prime is 121013899. The reversal of 121013870 is 78310121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44879 + ... + 47498.

It is an arithmetic number, because the mean of its divisors is an integer number (13718133).

Almost surely, 2^121013870 is an apocalyptic number.

121013870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121013870 is a deficient number, since it is larger than the sum of its proper divisors (98476258).

121013870 is a wasteful number, since it uses less digits than its factorization.

121013870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92515.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 121013870 is about 11000.6304364795. The cubic root of 121013870 is about 494.6276422895.

Adding to 121013870 its reverse (78310121), we get a palindrome (199323991).

The spelling of 121013870 in words is "one hundred twenty-one million, thirteen thousand, eight hundred seventy".