1121217725212 has 72 divisors (see below), whose sum is σ = 2250702851936. Its totient is φ = 485736625152.

The previous prime is 1121217725189. The next prime is 1121217725239. The reversal of 1121217725212 is 2125277121211.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5505433 + ... + 5705455.

Almost surely, 2^{1121217725212} is an apocalyptic number.

It is an amenable number.

1121217725212 is an abundant number, since it is smaller than the sum of its proper divisors (1129485126724).

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

1121217725212 is a wasteful number, since it uses less digits than its factorization.

1121217725212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200447 (or 200428 counting only the distinct ones).

The product of its digits is 7840, while the sum is 34.

The spelling of 1121217725212 in words is "one trillion, one hundred twenty-one billion, two hundred seventeen million, seven hundred twenty-five thousand, two hundred twelve".