121310012 has 6 divisors (see below), whose sum is σ = 212292528. Its totient is φ = 60655004.

The previous prime is 121309997. The next prime is 121310069. The reversal of 121310012 is 210013121.

It is a super-2 number, since 2×121310012² = 29432238022880288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121309975 and 121310002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15163748 + ... + 15163755.

It is an arithmetic number, because the mean of its divisors is an integer number (35382088).

Almost surely, 2^121310012 is an apocalyptic number.

It is an amenable number.

121310012 is a deficient number, since it is larger than the sum of its proper divisors (90982516).

121310012 is a wasteful number, since it uses less digits than its factorization.

121310012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30327507 (or 30327505 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121310012 is about 11014.0824402217. The cubic root of 121310012 is about 495.0307935814.

Adding to 121310012 its reverse (210013121), we get a palindrome (331323133).

The spelling of 121310012 in words is "one hundred twenty-one million, three hundred ten thousand, twelve".