20052253100 has 216 divisors, whose sum is σ = 51392898144. Its totient is φ = 6761216000.

The previous prime is 20052253073. The next prime is 20052253103. The reversal of 20052253100 is 135225002.

It is a super-2 number, since 2×20052253100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (20052253103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14604014 + ... + 14605386.

It is an arithmetic number, because the mean of its divisors is an integer number (237930084).

Almost surely, 2^20052253100 is an apocalyptic number.

20052253100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20052253100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25696449072).

20052253100 is an abundant number, since it is smaller than the sum of its proper divisors (31340645044).

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

20052253100 is a wasteful number, since it uses less digits than its factorization.

20052253100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 20052253100 its reverse (135225002), we get a palindrome (20187478102).

The spelling of 20052253100 in words is "twenty billion, fifty-two million, two hundred fifty-three thousand, one hundred".