1222210021120 has 144 divisors (see below), whose sum is σ = 3197056439808. Its totient is φ = 443975454720.

The previous prime is 1222210021061. The next prime is 1222210021139. The reversal of 1222210021120 is 211200122221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1222210021094 and 1222210021103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13570477 + ... + 13660243.

It is an arithmetic number, because the mean of its divisors is an integer number (22201780832).

Almost surely, 2^{1222210021120} is an apocalyptic number.

1222210021120 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 1222210021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1598528219904).

1222210021120 is an abundant number, since it is smaller than the sum of its proper divisors (1974846418688).

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

1222210021120 is an equidigital number, since it uses as much as digits as its factorization.

1222210021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90766 (or 90752 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222210021120 its reverse (211200122221), we get a palindrome (1433410143341).

The spelling of 1222210021120 in words is "one trillion, two hundred twenty-two billion, two hundred ten million, twenty-one thousand, one hundred twenty".