1232221320220 has 96 divisors (see below), whose sum is σ = 2849749765632. Its totient is φ = 443832480000.

The previous prime is 1232221320217. The next prime is 1232221320221. The reversal of 1232221320220 is 220231222321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1232221320191 and 1232221320200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232221320221) 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, 15552105 + ... + 15631135.

It is an arithmetic number, because the mean of its divisors is an integer number (29684893392).

Almost surely, 2^{1232221320220} is an apocalyptic number.

1232221320220 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 1232221320220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1424874882816).

1232221320220 is an abundant number, since it is smaller than the sum of its proper divisors (1617528445412).

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

1232221320220 is a wasteful number, since it uses less digits than its factorization.

1232221320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79723 (or 79721 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1232221320220 its reverse (220231222321), we get a palindrome (1452452542541).

The spelling of 1232221320220 in words is "one trillion, two hundred thirty-two billion, two hundred twenty-one million, three hundred twenty thousand, two hundred twenty".