1122231211220 has 216 divisors, whose sum is σ = 2921240502432. Its totient is φ = 361007539200.

The previous prime is 1122231211163. The next prime is 1122231211331. The reversal of 1122231211220 is 221121322211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1122231211192 and 1122231211201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 93739835 + ... + 93751805.

Almost surely, 2^{1122231211220} is an apocalyptic number.

1122231211220 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 1122231211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1460620251216).

1122231211220 is an abundant number, since it is smaller than the sum of its proper divisors (1799009291212).

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

1122231211220 is a wasteful number, since it uses less digits than its factorization.

1122231211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12359 (or 12333 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1122231211220 its reverse (221121322211), we get a palindrome (1343352533431).

The spelling of 1122231211220 in words is "one trillion, one hundred twenty-two billion, two hundred thirty-one million, two hundred eleven thousand, two hundred twenty".