121210010 has 16 divisors (see below), whose sum is σ = 219645000. Its totient is φ = 48158016.

The previous prime is 121210007. The next prime is 121210021. The reversal of 121210010 is 10012121.

It can be written as a sum of positive squares in 4 ways, for example, as 31888609 + 89321401 = 5647^2 + 9451^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121210010.

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 7 ways as a sum of consecutive naturals, for example, 39185 + ... + 42164.

Almost surely, 2^121210010 is an apocalyptic number.

121210010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210010 is a deficient number, since it is larger than the sum of its proper divisors (98434990).

121210010 is a wasteful number, since it uses less digits than its factorization.

121210010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81505.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 121210010 is about 11009.5417706642. The cubic root of 121210010 is about 494.8947298503.

Adding to 121210010 its reverse (10012121), we get a palindrome (131222131).

The spelling of 121210010 in words is "one hundred twenty-one million, two hundred ten thousand, ten".