1011122013220 has 96 divisors (see below), whose sum is σ = 2333655878400. Its totient is φ = 364943562240.

The previous prime is 1011122013169. The next prime is 1011122013229. The reversal of 1011122013220 is 223102211101.

It is a junction number, because it is equal to n+sod(n) for n = 1011122013194 and 1011122013203.

It is not an unprimeable number, because it can be changed into a prime (1011122013229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47422002 + ... + 47443318.

It is an arithmetic number, because the mean of its divisors is an integer number (24308915400).

Almost surely, 2^{1011122013220} is an apocalyptic number.

1011122013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011122013220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166827939200).

1011122013220 is an abundant number, since it is smaller than the sum of its proper divisors (1322533865180).

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

1011122013220 is a wasteful number, since it uses less digits than its factorization.

1011122013220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22933 (or 22931 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1011122013220 its reverse (223102211101), we get a palindrome (1234224224321).

The spelling of 1011122013220 in words is "one trillion, eleven billion, one hundred twenty-two million, thirteen thousand, two hundred twenty".