21231141141 has 16 divisors (see below), whose sum is σ = 32435395200. Its totient is φ = 12100888128.

The previous prime is 21231141131. The next prime is 21231141161. The reversal of 21231141141 is 14114113212.

It is not a de Polignac number, because 21231141141 - 2⁹ = 21231140629 is a prime.

It is a super-2 number, since 2×21231141141² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231141131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1291326 + ... + 1307663.

It is an arithmetic number, because the mean of its divisors is an integer number (2027212200).

Almost surely, 2^21231141141 is an apocalyptic number.

21231141141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21231141141 is a deficient number, since it is larger than the sum of its proper divisors (11204254059).

21231141141 is a wasteful number, since it uses less digits than its factorization.

21231141141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599388.

The product of its digits is 192, while the sum is 21.

Adding to 21231141141 its reverse (14114113212), we get a palindrome (35345254353).

The spelling of 21231141141 in words is "twenty-one billion, two hundred thirty-one million, one hundred forty-one thousand, one hundred forty-one".