1220120122099 has 4 divisors (see below), whose sum is σ = 1220409322840. Its totient is φ = 1219830921360.

The previous prime is 1220120122043. The next prime is 1220120122121. The reversal of 1220120122099 is 9902210210221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220120122099 - 2³³ = 1211530187507 is a prime.

It is a super-2 number, since 2×1220120122099² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220120122099.

It is not an unprimeable number, because it can be changed into a prime (1220120122019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144594042 + ... + 144602479.

It is an arithmetic number, because the mean of its divisors is an integer number (305102330710).

Almost surely, 2^{1220120122099} is an apocalyptic number.

1220120122099 is a deficient number, since it is larger than the sum of its proper divisors (289200741).

1220120122099 is an equidigital number, since it uses as much as digits as its factorization.

1220120122099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289200740.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 1220120122099 in words is "one trillion, two hundred twenty billion, one hundred twenty million, one hundred twenty-two thousand, ninety-nine".