20900229120 has 520 divisors, whose sum is σ = 76926071376. Its totient is φ = 5425201152.

The previous prime is 20900229113. The next prime is 20900229139. The reversal of 20900229120 is 2192200902.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 71331694 + ... + 71331986.

Almost surely, 2^20900229120 is an apocalyptic number.

20900229120 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 20900229120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38463035688).

20900229120 is an abundant number, since it is smaller than the sum of its proper divisors (56025842256).

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

20900229120 is an equidigital number, since it uses as much as digits as its factorization.

20900229120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 20900229120 in words is "twenty billion, nine hundred million, two hundred twenty-nine thousand, one hundred twenty".