1220120021199 has 16 divisors (see below), whose sum is σ = 1714212823680. Its totient is φ = 769808466720.

The previous prime is 1220120021117. The next prime is 1220120021207. The reversal of 1220120021199 is 9911200210221.

It is not a de Polignac number, because 1220120021199 - 2³⁵ = 1185760282831 is a prime.

It is a super-2 number, since 2×1220120021199² (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 (1220120021899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10967112 + ... + 11077805.

It is an arithmetic number, because the mean of its divisors is an integer number (107138301480).

Almost surely, 2^{1220120021199} is an apocalyptic number.

1220120021199 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1220120021199 is a deficient number, since it is larger than the sum of its proper divisors (494092802481).

1220120021199 is a wasteful number, since it uses less digits than its factorization.

1220120021199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22045910.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 1220120021199 in words is "one trillion, two hundred twenty billion, one hundred twenty million, twenty-one thousand, one hundred ninety-nine".