20223220400 has 60 divisors (see below), whose sum is σ = 51444321192. Its totient is φ = 7613445120.

The previous prime is 20223220343. The next prime is 20223220411. The reversal of 20223220400 is 402232202.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1480202 + ... + 1493801.

Almost surely, 2^20223220400 is an apocalyptic number.

20223220400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20223220400 is an abundant number, since it is smaller than the sum of its proper divisors (31221100792).

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

20223220400 is a wasteful number, since it uses less digits than its factorization.

20223220400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974038 (or 2974027 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

Adding to 20223220400 its reverse (402232202), we get a palindrome (20625452602).

The spelling of 20223220400 in words is "twenty billion, two hundred twenty-three million, two hundred twenty thousand, four hundred".