121112012 has 24 divisors (see below), whose sum is σ = 256473504. Its totient is φ = 48851712.

The previous prime is 121112011. The next prime is 121112027. The reversal of 121112012 is 210211121.

It is a junction number, because it is equal to n+sod(n) for n = 121111984 and 121112002.

It is not an unprimeable number, because it can be changed into a prime (121112011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126743 + ... + 127694.

It is an arithmetic number, because the mean of its divisors is an integer number (10686396).

Almost surely, 2^121112012 is an apocalyptic number.

It is an amenable number.

121112012 is an abundant number, since it is smaller than the sum of its proper divisors (135361492).

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

121112012 is a wasteful number, since it uses less digits than its factorization.

121112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254465 (or 254463 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 121112012 is about 11005.0902767765. The cubic root of 121112012 is about 494.7613201592.

Adding to 121112012 its reverse (210211121), we get a palindrome (331323133).

The spelling of 121112012 in words is "one hundred twenty-one million, one hundred twelve thousand, twelve".