121950810 has 48 divisors (see below), whose sum is σ = 324815400. Its totient is φ = 31726080.

The previous prime is 121950793. The next prime is 121950839. The reversal of 121950810 is 18059121.

It can be written as a sum of positive squares in 4 ways, for example, as 24000201 + 97950609 = 4899^2 + 9897^2 .

It is a super-2 number, since 2×121950810² = 29744000119312200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12835 + ... + 20214.

Almost surely, 2^121950810 is an apocalyptic number.

121950810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121950810 is an abundant number, since it is smaller than the sum of its proper divisors (202864590).

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

121950810 is a wasteful number, since it uses less digits than its factorization.

121950810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33103 (or 33100 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 121950810 is about 11043.1340660159. The cubic root of 121950810 is about 495.9008999246.

It can be divided in two parts, 121950 and 810, that added together give a triangular number (122760 = T₄₉₅).

The spelling of 121950810 in words is "one hundred twenty-one million, nine hundred fifty thousand, eight hundred ten".