20220020356 has 6 divisors (see below), whose sum is σ = 35385035630. Its totient is φ = 10110010176.

The previous prime is 20220020347. The next prime is 20220020357. The reversal of 20220020356 is 65302002202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19595520256 + 624500100 = 139984^2 + 24990^2 .

It is not an unprimeable number, because it can be changed into a prime (20220020357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2527502541 + ... + 2527502548.

Almost surely, 2^20220020356 is an apocalyptic number.

It is an amenable number.

20220020356 is a deficient number, since it is larger than the sum of its proper divisors (15165015274).

20220020356 is a wasteful number, since it uses less digits than its factorization.

20220020356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055005093 (or 5055005091 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20220020356 its reverse (65302002202), we get a palindrome (85522022558).

The spelling of 20220020356 in words is "twenty billion, two hundred twenty million, twenty thousand, three hundred fifty-six".