20122244240 has 80 divisors (see below), whose sum is σ = 53556667392. Its totient is φ = 6887572992.

The previous prime is 20122244227. The next prime is 20122244251. The reversal of 20122244240 is 4244222102.

It is a tau number, because it is divible by the number of its divisors (80).

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, 310322 + ... + 369518.

Almost surely, 2^20122244240 is an apocalyptic number.

20122244240 is a gapful number since it is divisible by the number (20) 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 20122244240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26778333696).

20122244240 is an abundant number, since it is smaller than the sum of its proper divisors (33434423152).

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

20122244240 is a wasteful number, since it uses less digits than its factorization.

20122244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59824 (or 59818 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20122244240 its reverse (4244222102), we get a palindrome (24366466342).

The spelling of 20122244240 in words is "twenty billion, one hundred twenty-two million, two hundred forty-four thousand, two hundred forty".