211421233023 has 512 divisors, whose sum is σ = 446557224960. Its totient is φ = 85279703040.

The previous prime is 211421233021. The next prime is 211421233027. The reversal of 211421233023 is 320332124112.

It is not a de Polignac number, because 211421233023 - 2¹ = 211421233021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211421232984 and 211421233002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211421233021) by changing a digit.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 1543220611 + ... + 1543220747.

It is an arithmetic number, because the mean of its divisors is an integer number (872182080).

Almost surely, 2^211421233023 is an apocalyptic number.

211421233023 is an abundant number, since it is smaller than the sum of its proper divisors (235135991937).

211421233023 is a wasteful number, since it uses less digits than its factorization.

211421233023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 211421233023 its reverse (320332124112), we get a palindrome (531753357135).

It can be divided in two parts, 211421 and 233023, that added together give a palindrome (444444).

The spelling of 211421233023 in words is "two hundred eleven billion, four hundred twenty-one million, two hundred thirty-three thousand, twenty-three".