211021234023404 has 60 divisors (see below), whose sum is σ = 430949182741224. Its totient is φ = 90408324730752.

The previous prime is 211021234023367. The next prime is 211021234023491. The reversal of 211021234023404 is 404320432120112.

It is a super-2 number, since 2×211021234023404² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26045684 + ... + 33172580.

Almost surely, 2^{211021234023404} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211021234023404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215474591370612).

211021234023404 is an abundant number, since it is smaller than the sum of its proper divisors (219927948717820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211021234023404 is an equidigital number, since it uses as much as digits as its factorization.

211021234023404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130012 (or 7129989 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 211021234023404 its reverse (404320432120112), we get a palindrome (615341666143516).

The spelling of 211021234023404 in words is "two hundred eleven trillion, twenty-one billion, two hundred thirty-four million, twenty-three thousand, four hundred four".