121312013010 has 32 divisors (see below), whose sum is σ = 306472455360. Its totient is φ = 30647245248.

The previous prime is 121312012949. The next prime is 121312013047. The reversal of 121312013010 is 10310213121.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106413477 + ... + 106414616.

It is an arithmetic number, because the mean of its divisors is an integer number (9577264230).

Almost surely, 2^121312013010 is an apocalyptic number.

121312013010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121312013010 is an abundant number, since it is smaller than the sum of its proper divisors (185160442350).

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

121312013010 is a wasteful number, since it uses less digits than its factorization.

121312013010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212828122.

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

Adding to 121312013010 its reverse (10310213121), we get a palindrome (131622226131).

The spelling of 121312013010 in words is "one hundred twenty-one billion, three hundred twelve million, thirteen thousand, ten".