211221210001023 has 24 divisors (see below), whose sum is σ = 313360726687008. Its totient is φ = 137000678622912.

The previous prime is 211221210001003. The next prime is 211221210001033. The reversal of 211221210001023 is 320100012122112.

211221210001023 is a `hidden beast` number, since 211 + 221 + 210 + 0 + 0 + 1 + 0 + 23 = 666.

211221210001023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211221210001023 - 2³³ = 211212620066431 is a prime.

It is a super-2 number, since 2×211221210001023² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221210000987 and 211221210001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221210001003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11806140 + ... + 23702897.

It is an arithmetic number, because the mean of its divisors is an integer number (13056696945292).

Almost surely, 2^{211221210001023} is an apocalyptic number.

211221210001023 is a deficient number, since it is larger than the sum of its proper divisors (102139516685985).

211221210001023 is a wasteful number, since it uses less digits than its factorization.

211221210001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35526943 (or 35526940 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211221210001023 its reverse (320100012122112), we get a palindrome (531321222123135).

The spelling of 211221210001023 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred ten million, one thousand, twenty-three".