1020120111122 has 12 divisors (see below), whose sum is σ = 1780005500190. Its totient is φ = 437194333296.

The previous prime is 1020120111071. The next prime is 1020120111187. The reversal of 1020120111122 is 2211110210201.

It can be written as a sum of positive squares in only one way, i.e., 957014149441 + 63105961681 = 978271^2 + 251209^2 .

It is a super-2 number, since 2×1020120111122² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1020120111097 and 1020120111106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5204694347 + ... + 5204694542.

Almost surely, 2^{1020120111122} is an apocalyptic number.

1020120111122 is a deficient number, since it is larger than the sum of its proper divisors (759885389068).

1020120111122 is a wasteful number, since it uses less digits than its factorization.

1020120111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10409388905 (or 10409388898 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1020120111122 its reverse (2211110210201), we get a palindrome (3231230321323).

The spelling of 1020120111122 in words is "one trillion, twenty billion, one hundred twenty million, one hundred eleven thousand, one hundred twenty-two".