23211123100020 has 72 divisors (see below), whose sum is σ = 70873345495680. Its totient is φ = 6148641873600.

The previous prime is 23211123100007. The next prime is 23211123100049. The reversal of 23211123100020 is 2000132111232.

23211123100020 is a `hidden beast` number, since 2 + 321 + 1 + 12 + 310 + 0 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23211123099966 and 23211123100002.

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, 426961840 + ... + 427016199.

Almost surely, 2^{23211123100020} is an apocalyptic number.

23211123100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23211123100020 is an abundant number, since it is smaller than the sum of its proper divisors (47662222395660).

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

23211123100020 is a wasteful number, since it uses less digits than its factorization.

23211123100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853978205 (or 853978200 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23211123100020 its reverse (2000132111232), we get a palindrome (25211255211252).

The spelling of 23211123100020 in words is "twenty-three trillion, two hundred eleven billion, one hundred twenty-three million, one hundred thousand, twenty".