121323210010 has 24 divisors (see below), whose sum is σ = 222579984060. Its totient is φ = 47613626112.

The previous prime is 121323210007. The next prime is 121323210023. The reversal of 121323210010 is 10012323121.

It can be written as a sum of positive squares in 6 ways, for example, as 45042846289 + 76280363721 = 212233^2 + 276189^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2131455 + ... + 2187634.

Almost surely, 2^121323210010 is an apocalyptic number.

121323210010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121323210010 is a deficient number, since it is larger than the sum of its proper divisors (101256774050).

121323210010 is an equidigital number, since it uses as much as digits as its factorization.

121323210010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319202 (or 4319149 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121323210010 its reverse (10012323121), we get a palindrome (131335533131).

The spelling of 121323210010 in words is "one hundred twenty-one billion, three hundred twenty-three million, two hundred ten thousand, ten".