212101211023 has 16 divisors (see below), whose sum is σ = 228712377600. Its totient is φ = 195532485120.

The previous prime is 212101210999. The next prime is 212101211099. The reversal of 212101211023 is 320112101212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212101211023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212101210988 and 212101211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101251023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50151873 + ... + 50156101.

It is an arithmetic number, because the mean of its divisors is an integer number (14294523600).

Almost surely, 2^212101211023 is an apocalyptic number.

212101211023 is a deficient number, since it is larger than the sum of its proper divisors (16611166577).

212101211023 is a wasteful number, since it uses less digits than its factorization.

212101211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8322.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212101211023 its reverse (320112101212), we get a palindrome (532213312235).

The spelling of 212101211023 in words is "two hundred twelve billion, one hundred one million, two hundred eleven thousand, twenty-three".