20200221572 has 24 divisors (see below), whose sum is σ = 35855597400. Its totient is φ = 9955927296.

The previous prime is 20200221563. The next prime is 20200221577. The reversal of 20200221572 is 27512200202.

It can be written as a sum of positive squares in 4 ways, for example, as 4641151876 + 15559069696 = 68126^2 + 124736^2 .

It is not an unprimeable number, because it can be changed into a prime (20200221577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503054 + ... + 541722.

It is an arithmetic number, because the mean of its divisors is an integer number (1493983225).

Almost surely, 2^20200221572 is an apocalyptic number.

It is an amenable number.

20200221572 is a deficient number, since it is larger than the sum of its proper divisors (15655375828).

20200221572 is a wasteful number, since it uses less digits than its factorization.

20200221572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40535 (or 40533 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

Adding to 20200221572 its reverse (27512200202), we get a palindrome (47712421774).

The spelling of 20200221572 in words is "twenty billion, two hundred million, two hundred twenty-one thousand, five hundred seventy-two".