21234114040 has 16 divisors (see below), whose sum is σ = 47776756680. Its totient is φ = 8493645600.

The previous prime is 21234114029. The next prime is 21234114049. The reversal of 21234114040 is 4041143212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234114049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265426386 + ... + 265426465.

Almost surely, 2^21234114040 is an apocalyptic number.

21234114040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21234114040 is an abundant number, since it is smaller than the sum of its proper divisors (26542642640).

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

21234114040 is a wasteful number, since it uses less digits than its factorization.

21234114040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530852862 (or 530852858 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21234114040 its reverse (4041143212), we get a palindrome (25275257252).

The spelling of 21234114040 in words is "twenty-one billion, two hundred thirty-four million, one hundred fourteen thousand, forty".