121131010 has 64 divisors (see below), whose sum is σ = 292771584. Its totient is φ = 34848000.

The previous prime is 121130983. The next prime is 121131011. The reversal of 121131010 is 10131121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (121131011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3960 + ... + 16060.

It is an arithmetic number, because the mean of its divisors is an integer number (4574556).

Almost surely, 2^121131010 is an apocalyptic number.

121131010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121131010 is an abundant number, since it is smaller than the sum of its proper divisors (171640574).

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

121131010 is a wasteful number, since it uses less digits than its factorization.

121131010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12139.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 121131010 is about 11005.9533889618. The cubic root of 121131010 is about 494.7871887304.

Adding to 121131010 its reverse (10131121), we get a palindrome (131262131).

It can be divided in two parts, 121 and 131010, that added together give a palindrome (131131).

The spelling of 121131010 in words is "one hundred twenty-one million, one hundred thirty-one thousand, ten".