1221200001190 has 24 divisors (see below), whose sum is σ = 2380256100288. Its totient is φ = 450904615200.

The previous prime is 1221200001167. The next prime is 1221200001191. The reversal of 1221200001190 is 911000021221.

It is a happy number.

It is a super-2 number, since 2×1221200001190² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221200001191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361300086 + ... + 361303465.

It is an arithmetic number, because the mean of its divisors is an integer number (99177337512).

Almost surely, 2^{1221200001190} is an apocalyptic number.

1221200001190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221200001190 is a deficient number, since it is larger than the sum of its proper divisors (1159056099098).

1221200001190 is a wasteful number, since it uses less digits than its factorization.

1221200001190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722603584 (or 722603571 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 1221200001190 in words is "one trillion, two hundred twenty-one billion, two hundred million, one thousand, one hundred ninety".