21114122232 has 32 divisors (see below), whose sum is σ = 60326064000. Its totient is φ = 6032606304.

The previous prime is 21114122209. The next prime is 21114122233. The reversal of 21114122232 is 23222141112.

It is a happy number.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21114122199 and 21114122208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114122233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62839482 + ... + 62839817.

It is an arithmetic number, because the mean of its divisors is an integer number (1885189500).

Almost surely, 2^21114122232 is an apocalyptic number.

It is an amenable number.

21114122232 is an abundant number, since it is smaller than the sum of its proper divisors (39211941768).

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

21114122232 is a wasteful number, since it uses less digits than its factorization.

21114122232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125679315 (or 125679311 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

Adding to 21114122232 its reverse (23222141112), we get a palindrome (44336263344).

The spelling of 21114122232 in words is "twenty-one billion, one hundred fourteen million, one hundred twenty-two thousand, two hundred thirty-two".