211320002023 has 4 divisors (see below), whose sum is σ = 227575386808. Its totient is φ = 195064617240.

The previous prime is 211320002021. The next prime is 211320002053. The reversal of 211320002023 is 320200023112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211320002023 - 2¹ = 211320002021 is a prime.

It is a super-2 number, since 2×211320002023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211320001988 and 211320002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211320002021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8127692373 + ... + 8127692398.

It is an arithmetic number, because the mean of its divisors is an integer number (56893846702).

Almost surely, 2^211320002023 is an apocalyptic number.

211320002023 is a deficient number, since it is larger than the sum of its proper divisors (16255384785).

211320002023 is a wasteful number, since it uses less digits than its factorization.

211320002023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16255384784.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 211320002023 its reverse (320200023112), we get a palindrome (531520025135).

The spelling of 211320002023 in words is "two hundred eleven billion, three hundred twenty million, two thousand, twenty-three".