20223100 has 18 divisors (see below), whose sum is σ = 43884344. Its totient is φ = 8089200.

The previous prime is 20223089. The next prime is 20223101. The reversal of 20223100 is 132202.

It is a super-2 number, since 2×20223100² = 817947547220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101016 + ... + 101215.

Almost surely, 2^20223100 is an apocalyptic number.

20223100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20223100 is an abundant number, since it is smaller than the sum of its proper divisors (23661244).

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

20223100 is a wasteful number, since it uses less digits than its factorization.

20223100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202245 (or 202238 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20223100 is about 4497.0101178450. The cubic root of 20223100 is about 272.4473427417.

Adding to 20223100 its reverse (132202), we get a palindrome (20355302).

The spelling of 20223100 in words is "twenty million, two hundred twenty-three thousand, one hundred".