20211212023 has 2 divisors, whose sum is σ = 20211212024. Its totient is φ = 20211212022.

The previous prime is 20211212003. The next prime is 20211212029. The reversal of 20211212023 is 32021211202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211212023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20211211988 and 20211212006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211212029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105606011 + 10105606012.

It is an arithmetic number, because the mean of its divisors is an integer number (10105606012).

Almost surely, 2^20211212023 is an apocalyptic number.

20211212023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211212023 is an equidigital number, since it uses as much as digits as its factorization.

20211212023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20211212023 its reverse (32021211202), we get a palindrome (52232423225).

The spelling of 20211212023 in words is "twenty billion, two hundred eleven million, two hundred twelve thousand, twenty-three".