22020053542621 has 16 divisors (see below), whose sum is σ = 24273515962224. Its totient is φ = 19888399908864.

The previous prime is 22020053542541. The next prime is 22020053542631. The reversal of 22020053542621 is 12624535002022.

It can be written as a sum of positive squares in 8 ways, for example, as 4237689859225 + 17782363683396 = 2058565^2 + 4216914^2 .

It is not a de Polignac number, because 22020053542621 - 2¹⁹ = 22020053018333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020053542631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239735140 + ... + 239826973.

It is an arithmetic number, because the mean of its divisors is an integer number (1517094747639).

Almost surely, 2^{22020053542621} is an apocalyptic number.

It is an amenable number.

22020053542621 is a deficient number, since it is larger than the sum of its proper divisors (2253462419603).

22020053542621 is a wasteful number, since it uses less digits than its factorization.

22020053542621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479562240.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 22020053542621 its reverse (12624535002022), we get a palindrome (34644588544643).

The spelling of 22020053542621 in words is "twenty-two trillion, twenty billion, fifty-three million, five hundred forty-two thousand, six hundred twenty-one".