121420012 has 24 divisors (see below), whose sum is σ = 246824480. Its totient is φ = 51183360.

The previous prime is 121420009. The next prime is 121420021. The reversal of 121420012 is 210024121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121419974 and 121420001.

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, 33837 + ... + 37252.

Almost surely, 2^121420012 is an apocalyptic number.

It is an amenable number.

121420012 is an abundant number, since it is smaller than the sum of its proper divisors (125404468).

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

121420012 is a wasteful number, since it uses less digits than its factorization.

121420012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71161 (or 71159 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121420012 is about 11019.0749157994. The cubic root of 121420012 is about 495.1803743561.

Adding to 121420012 its reverse (210024121), we get a palindrome (331444133).

The spelling of 121420012 in words is "one hundred twenty-one million, four hundred twenty thousand, twelve".