20220120340 has 96 divisors (see below), whose sum is σ = 51308974080. Its totient is φ = 6538610304.

The previous prime is 20220120329. The next prime is 20220120367. The reversal of 20220120340 is 4302102202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 587077 + ... + 620563.

It is an arithmetic number, because the mean of its divisors is an integer number (534468480).

Almost surely, 2^20220120340 is an apocalyptic number.

20220120340 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 20220120340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25654487040).

20220120340 is an abundant number, since it is smaller than the sum of its proper divisors (31088853740).

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

20220120340 is a wasteful number, since it uses less digits than its factorization.

20220120340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33749 (or 33747 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20220120340 its reverse (4302102202), we get a palindrome (24522222542).

The spelling of 20220120340 in words is "twenty billion, two hundred twenty million, one hundred twenty thousand, three hundred forty".