11110021212231 has 24 divisors (see below), whose sum is σ = 17021978092080. Its totient is φ = 6958611776256.

The previous prime is 11110021212217. The next prime is 11110021212239. The reversal of 11110021212231 is 13221212001111.

It is a happy number.

11110021212231 is a `hidden beast` number, since 111 + 100 + 212 + 12 + 231 = 666.

It is not a de Polignac number, because 11110021212231 - 2⁹ = 11110021211719 is a prime.

It is a super-2 number, since 2×11110021212231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110021212239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64402776 + ... + 64575053.

It is an arithmetic number, because the mean of its divisors is an integer number (709249087170).

Almost surely, 2^{11110021212231} is an apocalyptic number.

11110021212231 is a deficient number, since it is larger than the sum of its proper divisors (5911956879849).

11110021212231 is a wasteful number, since it uses less digits than its factorization.

11110021212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128978415 (or 128978412 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11110021212231 its reverse (13221212001111), we get a palindrome (24331233213342).

The spelling of 11110021212231 in words is "eleven trillion, one hundred ten billion, twenty-one million, two hundred twelve thousand, two hundred thirty-one".