1011221023320 has 96 divisors (see below), whose sum is σ = 3302983476000. Its totient is φ = 268303850496.

The previous prime is 1011221023289. The next prime is 1011221023331. The reversal of 1011221023320 is 233201221101.

1011221023320 is a `hidden beast` number, since 1 + 0 + 112 + 210 + 23 + 320 = 666.

1011221023320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1011221023293 and 1011221023302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6986017 + ... + 7129296.

It is an arithmetic number, because the mean of its divisors is an integer number (34406077875).

Almost surely, 2^{1011221023320} is an apocalyptic number.

1011221023320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011221023320 is an abundant number, since it is smaller than the sum of its proper divisors (2291762452680).

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

1011221023320 is a wasteful number, since it uses less digits than its factorization.

1011221023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14115529 (or 14115522 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1011221023320 its reverse (233201221101), we get a palindrome (1244422244421).

The spelling of 1011221023320 in words is "one trillion, eleven billion, two hundred twenty-one million, twenty-three thousand, three hundred twenty".