121240403210 has 8 divisors (see below), whose sum is σ = 218232725796. Its totient is φ = 48496161280.

The previous prime is 121240403197. The next prime is 121240403227. The reversal of 121240403210 is 12304042121.

It can be written as a sum of positive squares in 2 ways, for example, as 109745775841 + 11494627369 = 331279^2 + 107213^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6062020151 + ... + 6062020170.

Almost surely, 2^121240403210 is an apocalyptic number.

121240403210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121240403210 is a deficient number, since it is larger than the sum of its proper divisors (96992322586).

121240403210 is a wasteful number, since it uses less digits than its factorization.

121240403210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12124040328.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121240403210 its reverse (12304042121), we get a palindrome (133544445331).

The spelling of 121240403210 in words is "one hundred twenty-one billion, two hundred forty million, four hundred three thousand, two hundred ten".