211021040023 has 8 divisors (see below), whose sum is σ = 221997589200. Its totient is φ = 200291155008.

The previous prime is 211021040017. The next prime is 211021040029. The reversal of 211021040023 is 320040120112.

It is an interprime number because it is at equal distance from previous prime (211021040017) and next prime (211021040029).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211021040023 - 2²⁵ = 210987485591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211021039979 and 211021040006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021040029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61664286 + ... + 61667707.

It is an arithmetic number, because the mean of its divisors is an integer number (27749698650).

Almost surely, 2^211021040023 is an apocalyptic number.

211021040023 is a deficient number, since it is larger than the sum of its proper divisors (10976549177).

211021040023 is a wasteful number, since it uses less digits than its factorization.

211021040023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123332081.

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

Adding to 211021040023 its reverse (320040120112), we get a palindrome (531061160135).

The spelling of 211021040023 in words is "two hundred eleven billion, twenty-one million, forty thousand, twenty-three".