121311300210 has 32 divisors (see below), whose sum is σ = 291274036992. Its totient is φ = 32335578240.

The previous prime is 121311300199. The next prime is 121311300233. The reversal of 121311300210 is 12003113121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121311300210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811306 + ... + 949125.

It is an arithmetic number, because the mean of its divisors is an integer number (9102313656).

Almost surely, 2^121311300210 is an apocalyptic number.

121311300210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121311300210 is an abundant number, since it is smaller than the sum of its proper divisors (169962736782).

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

121311300210 is a wasteful number, since it uses less digits than its factorization.

121311300210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762738.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 121311300210 its reverse (12003113121), we get a palindrome (133314413331).

The spelling of 121311300210 in words is "one hundred twenty-one billion, three hundred eleven million, three hundred thousand, two hundred ten".