1222020240144 has 160 divisors (see below), whose sum is σ = 3503957875200. Its totient is φ = 363899796480.

The previous prime is 1222020240131. The next prime is 1222020240149. The reversal of 1222020240144 is 4410420202221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1222020240149) 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, 7579927 + ... + 7739465.

It is an arithmetic number, because the mean of its divisors is an integer number (21899736720).

Almost surely, 2^{1222020240144} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222020240144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751978937600).

1222020240144 is an abundant number, since it is smaller than the sum of its proper divisors (2281937635056).

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

1222020240144 is a wasteful number, since it uses less digits than its factorization.

1222020240144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159813 (or 159807 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 1222020240144 its reverse (4410420202221), we get a palindrome (5632440442365).

The spelling of 1222020240144 in words is "one trillion, two hundred twenty-two billion, twenty million, two hundred forty thousand, one hundred forty-four".