212021223023 has 8 divisors (see below), whose sum is σ = 213776375808. Its totient is φ = 210267409464.

The previous prime is 212021223019. The next prime is 212021223047. The reversal of 212021223023 is 320322120212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212021223023 - 2² = 212021223019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021222986 and 212021223004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021223013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15611 + ... + 651372.

It is an arithmetic number, because the mean of its divisors is an integer number (26722046976).

Almost surely, 2^212021223023 is an apocalyptic number.

212021223023 is a deficient number, since it is larger than the sum of its proper divisors (1755152785).

212021223023 is a wasteful number, since it uses less digits than its factorization.

212021223023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669613.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212021223023 its reverse (320322120212), we get a palindrome (532343343235).

The spelling of 212021223023 in words is "two hundred twelve billion, twenty-one million, two hundred twenty-three thousand, twenty-three".