1222032442100 has 72 divisors (see below), whose sum is σ = 2811273113880. Its totient is φ = 459490078720.

The previous prime is 1222032442093. The next prime is 1222032442123. The reversal of 1222032442100 is 12442302221.

It can be written as a sum of positive squares in 12 ways, for example, as 336404640016 + 885627802084 = 580004^2 + 941078^2 .

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, 931022 + ... + 1819578.

It is an arithmetic number, because the mean of its divisors is an integer number (39045459915).

Almost surely, 2^{1222032442100} is an apocalyptic number.

1222032442100 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 1222032442100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1405636556940).

1222032442100 is an abundant number, since it is smaller than the sum of its proper divisors (1589240671780).

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

1222032442100 is a wasteful number, since it uses less digits than its factorization.

1222032442100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889397 (or 889390 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1222032442100 its reverse (12442302221), we get a palindrome (1234474744321).

The spelling of 1222032442100 in words is "one trillion, two hundred twenty-two billion, thirty-two million, four hundred forty-two thousand, one hundred".