20101120230 has 32 divisors (see below), whose sum is σ = 48354651648. Its totient is φ = 5347858400.

The previous prime is 20101120211. The next prime is 20101120261. The reversal of 20101120230 is 3202110102.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 764376 + ... + 790235.

It is an arithmetic number, because the mean of its divisors is an integer number (1511082864).

Almost surely, 2^20101120230 is an apocalyptic number.

20101120230 is an abundant number, since it is smaller than the sum of its proper divisors (28253531418).

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

20101120230 is a wasteful number, since it uses less digits than its factorization.

20101120230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555052.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20101120230 its reverse (3202110102), we get a palindrome (23303230332).

The spelling of 20101120230 in words is "twenty billion, one hundred one million, one hundred twenty thousand, two hundred thirty".