121112101220012 has 48 divisors (see below), whose sum is σ = 256473758661120. Its totient is φ = 48851735469312.

The previous prime is 121112101219981. The next prime is 121112101220051. The reversal of 121112101220012 is 210022101211121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171790289 + ... + 172493847.

It is an arithmetic number, because the mean of its divisors is an integer number (5343203305440).

Almost surely, 2^{121112101220012} is an apocalyptic number.

It is an amenable number.

121112101220012 is an abundant number, since it is smaller than the sum of its proper divisors (135361657441108).

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

121112101220012 is a wasteful number, since it uses less digits than its factorization.

121112101220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065230 (or 1065228 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121112101220012 its reverse (210022101211121), we get a palindrome (331134202431133).

The spelling of 121112101220012 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred one million, two hundred twenty thousand, twelve".