20201223200 has 36 divisors (see below), whose sum is σ = 49316238090. Its totient is φ = 8080488960.

The previous prime is 20201223169. The next prime is 20201223221. The reversal of 20201223200 is 232210202.

It can be written as a sum of positive squares in 3 ways, for example, as 10785237904 + 9415985296 = 103852^2 + 97036^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12624965 + ... + 12626564.

Almost surely, 2^20201223200 is an apocalyptic number.

20201223200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201223200 is an abundant number, since it is smaller than the sum of its proper divisors (29115014890).

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

20201223200 is a wasteful number, since it uses less digits than its factorization.

20201223200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25251549 (or 25251536 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20201223200 its reverse (232210202), we get a palindrome (20433433402).

The spelling of 20201223200 in words is "twenty billion, two hundred one million, two hundred twenty-three thousand, two hundred".