1121225021200 has 30 divisors (see below), whose sum is σ = 2693743114394. Its totient is φ = 448490008320.

The previous prime is 1121225021183. The next prime is 1121225021227. The reversal of 1121225021200 is 21205221211.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 201536349184 + 919688672016 = 448928^2 + 959004^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1401530877 + ... + 1401531676.

Almost surely, 2^{1121225021200} is an apocalyptic number.

1121225021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121225021200 is an abundant number, since it is smaller than the sum of its proper divisors (1572518093194).

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

1121225021200 is a wasteful number, since it uses less digits than its factorization.

1121225021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803062571 (or 2803062560 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The spelling of 1121225021200 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-five million, twenty-one thousand, two hundred".