121125850 has 24 divisors (see below), whose sum is σ = 238548348. Its totient is φ = 45600000.

The previous prime is 121125847. The next prime is 121125853. The reversal of 121125850 is 58521121.

It is an interprime number because it is at equal distance from previous prime (121125847) and next prime (121125853).

It can be written as a sum of positive squares in 6 ways, for example, as 50851161 + 70274689 = 7131^2 + 8383^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (121125853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70401 + ... + 72100.

Almost surely, 2^121125850 is an apocalyptic number.

121125850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121125850 is a deficient number, since it is larger than the sum of its proper divisors (117422498).

121125850 is a wasteful number, since it uses less digits than its factorization.

121125850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142530 (or 142525 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 121125850 is about 11005.7189678821. The cubic root of 121125850 is about 494.7801628991.

Adding to 121125850 its reverse (58521121), we get a palindrome (179646971).

The spelling of 121125850 in words is "one hundred twenty-one million, one hundred twenty-five thousand, eight hundred fifty".