1220222122120 has 16 divisors (see below), whose sum is σ = 2745499774860. Its totient is φ = 488088848832.

The previous prime is 1220222122087. The next prime is 1220222122121. The reversal of 1220222122120 is 212212220221.

It can be written as a sum of positive squares in 2 ways, for example, as 1217637213156 + 2584908964 = 1103466^2 + 50842^2 .

It is a super-2 number, since 2×1220222122120² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220222122121) 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, 15252776487 + ... + 15252776566.

Almost surely, 2^{1220222122120} is an apocalyptic number.

1220222122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220222122120 is an abundant number, since it is smaller than the sum of its proper divisors (1525277652740).

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

1220222122120 is a wasteful number, since it uses less digits than its factorization.

1220222122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30505553064 (or 30505553060 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1220222122120 its reverse (212212220221), we get a palindrome (1432434342341).

The spelling of 1220222122120 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty".