121000000012 has 24 divisors (see below), whose sum is σ = 212407400016. Its totient is φ = 60312265728.

The previous prime is 120999999959. The next prime is 121000000021. The reversal of 121000000012 is 210000000121.

It is a junction number, because it is equal to n+sod(n) for n = 120999999941 and 121000000004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6490128 + ... + 6508744.

It is an arithmetic number, because the mean of its divisors is an integer number (8850308334).

Almost surely, 2^121000000012 is an apocalyptic number.

It is an amenable number.

121000000012 is a deficient number, since it is larger than the sum of its proper divisors (91407400004).

121000000012 is a wasteful number, since it uses less digits than its factorization.

121000000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23577 (or 23575 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 121000000012 its reverse (210000000121), we get a palindrome (331000000133).

The spelling of 121000000012 in words is "one hundred twenty-one billion, twelve", and thus it is an aban number.