20212320023 has 12 divisors (see below), whose sum is σ = 24749780760. Its totient is φ = 16413010992.

The previous prime is 20212319987. The next prime is 20212320109. The reversal of 20212320023 is 32002321202.

It is a de Polignac number, because none of the positive numbers 2^k-20212320023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20212319983 and 20212320010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212320523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10854236 + ... + 10856097.

It is an arithmetic number, because the mean of its divisors is an integer number (2062481730).

Almost surely, 2^20212320023 is an apocalyptic number.

20212320023 is a deficient number, since it is larger than the sum of its proper divisors (4537460737).

20212320023 is a wasteful number, since it uses less digits than its factorization.

20212320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21710366 (or 21710359 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20212320023 its reverse (32002321202), we get a palindrome (52214641225).

The spelling of 20212320023 in words is "twenty billion, two hundred twelve million, three hundred twenty thousand, twenty-three".