22020431240000 has 70 divisors (see below), whose sum is σ = 54603512934234. Its totient is φ = 8808172480000.

The previous prime is 22020431239991. The next prime is 22020431240009. The reversal of 22020431240000 is 4213402022.

It is an interprime number because it is at equal distance from previous prime (22020431239991) and next prime (22020431240009).

It can be written as a sum of positive squares in 5 ways, for example, as 6560687995456 + 15459743244544 = 2561384^2 + 3931888^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020431240009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 275215391 + ... + 275295390.

Almost surely, 2^{22020431240000} is an apocalyptic number.

22020431240000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020431240000 is an abundant number, since it is smaller than the sum of its proper divisors (32583081694234).

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

22020431240000 is an frugal number, since it uses more digits than its factorization.

22020431240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550510813 (or 550510788 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22020431240000 its reverse (4213402022), we get a palindrome (22024644642022).

The spelling of 22020431240000 in words is "twenty-two trillion, twenty billion, four hundred thirty-one million, two hundred forty thousand".