1220120021122 has 64 divisors (see below), whose sum is σ = 1909798974720. Its totient is φ = 584237804800.

The previous prime is 1220120021117. The next prime is 1220120021207. The reversal of 1220120021122 is 2211200210221.

It is a happy number.

It is a super-2 number, since 2×1220120021122² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220120021096 and 1220120021105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 569882172 + ... + 569884312.

It is an arithmetic number, because the mean of its divisors is an integer number (29840608980).

Almost surely, 2^{1220120021122} is an apocalyptic number.

1220120021122 is a deficient number, since it is larger than the sum of its proper divisors (689678953598).

1220120021122 is a wasteful number, since it uses less digits than its factorization.

1220120021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220120021122 its reverse (2211200210221), we get a palindrome (3431320231343).

The spelling of 1220120021122 in words is "one trillion, two hundred twenty billion, one hundred twenty million, twenty-one thousand, one hundred twenty-two".