212220020023 has 12 divisors (see below), whose sum is σ = 235887618960. Its totient is φ = 190759558880.

The previous prime is 212220019951. The next prime is 212220020063. The reversal of 212220020023 is 320020022212.

It is not a de Polignac number, because 212220020023 - 2¹³ = 212220011831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212220019979 and 212220020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220020063) 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, 9842515 + ... + 9864052.

It is an arithmetic number, because the mean of its divisors is an integer number (19657301580).

Almost surely, 2^212220020023 is an apocalyptic number.

212220020023 is a deficient number, since it is larger than the sum of its proper divisors (23667598937).

212220020023 is a wasteful number, since it uses less digits than its factorization.

212220020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19706678 (or 19706667 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 212220020023 its reverse (320020022212), we get a palindrome (532240042235).

The spelling of 212220020023 in words is "two hundred twelve billion, two hundred twenty million, twenty thousand, twenty-three".