11221222020120 has 256 divisors, whose sum is σ = 43170758092800. Its totient is φ = 2539456012800.

The previous prime is 11221222020109. The next prime is 11221222020137. The reversal of 11221222020120 is 2102022212211.

It is a happy number.

11221222020120 is a `hidden beast` number, since 1 + 1 + 221 + 2 + 220 + 201 + 20 = 666.

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 = 11221222020093 and 11221222020102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6584404 + ... + 8111523.

It is an arithmetic number, because the mean of its divisors is an integer number (168635773800).

Almost surely, 2^{11221222020120} is an apocalyptic number.

11221222020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221222020120 is an abundant number, since it is smaller than the sum of its proper divisors (31949536072680).

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

11221222020120 is a wasteful number, since it uses less digits than its factorization.

11221222020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14696055 (or 14696045 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11221222020120 its reverse (2102022212211), we get a palindrome (13323244232331).

The spelling of 11221222020120 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-two million, twenty thousand, one hundred twenty".