21132011142 has 24 divisors (see below), whose sum is σ = 49948390440. Its totient is φ = 6403639680.

The previous prime is 21132011141. The next prime is 21132011161. The reversal of 21132011142 is 24111023112.

It is a super-2 number, since 2×21132011142² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132011141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53363467 + ... + 53363862.

It is an arithmetic number, because the mean of its divisors is an integer number (2081182935).

Almost surely, 2^21132011142 is an apocalyptic number.

21132011142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21132011142 is an abundant number, since it is smaller than the sum of its proper divisors (28816379298).

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

21132011142 is a wasteful number, since it uses less digits than its factorization.

21132011142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106727348 (or 106727345 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21132011142 its reverse (24111023112), we get a palindrome (45243034254).

The spelling of 21132011142 in words is "twenty-one billion, one hundred thirty-two million, eleven thousand, one hundred forty-two".