20523211100000 has 144 divisors (see below), whose sum is σ = 57717839009376. Its totient is φ = 7036529280000.

The previous prime is 20523211099999. The next prime is 20523211100083. The reversal of 20523211100000 is 111232502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13959437 + ... + 15359436.

It is an arithmetic number, because the mean of its divisors is an integer number (400818326454).

Almost surely, 2^{20523211100000} is an apocalyptic number.

20523211100000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20523211100000 is an abundant number, since it is smaller than the sum of its proper divisors (37194627909376).

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

20523211100000 is an frugal number, since it uses more digits than its factorization.

20523211100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29318915 (or 29318887 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 20523211100000 its reverse (111232502), we get a palindrome (20523322332502).

The spelling of 20523211100000 in words is "twenty trillion, five hundred twenty-three billion, two hundred eleven million, one hundred thousand".