1011220120120 has 64 divisors (see below), whose sum is σ = 2619260556480. Its totient is φ = 344173341696.

The previous prime is 1011220120111. The next prime is 1011220120121. The reversal of 1011220120120 is 210210221101.

It is a super-2 number, since 2×1011220120120² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011220120120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011220120121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13142299 + ... + 13219018.

It is an arithmetic number, because the mean of its divisors is an integer number (40925946195).

Almost surely, 2^{1011220120120} is an apocalyptic number.

1011220120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011220120120 is an abundant number, since it is smaller than the sum of its proper divisors (1608040436360).

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

1011220120120 is a wasteful number, since it uses less digits than its factorization.

1011220120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26361472 (or 26361468 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1011220120120 its reverse (210210221101), we get a palindrome (1221430341221).

The spelling of 1011220120120 in words is "one trillion, eleven billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty".