211220010110023 has 2 divisors, whose sum is σ = 211220010110024. Its totient is φ = 211220010110022.

The previous prime is 211220010110017. The next prime is 211220010110129. The reversal of 211220010110023 is 320011010022112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211220010110023 is a prime.

It is a super-2 number, since 2×211220010110023² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220010109979 and 211220010110006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211320010110023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105610005055011 + 105610005055012.

It is an arithmetic number, because the mean of its divisors is an integer number (105610005055012).

Almost surely, 2^{211220010110023} is an apocalyptic number.

211220010110023 is a deficient number, since it is larger than the sum of its proper divisors (1).

211220010110023 is an equidigital number, since it uses as much as digits as its factorization.

211220010110023 is an odious number, because the sum of its binary digits is odd.

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

Adding to 211220010110023 its reverse (320011010022112), we get a palindrome (531231020132135).

The spelling of 211220010110023 in words is "two hundred eleven trillion, two hundred twenty billion, ten million, one hundred ten thousand, twenty-three".