21114263772 has 144 divisors (see below), whose sum is σ = 64911974400. Its totient is φ = 5649025536.

The previous prime is 21114263767. The next prime is 21114263777. The reversal of 21114263772 is 27736241112.

21114263772 is a `hidden beast` number, since 2 + 1 + 1 + 14 + 2 + 637 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (21114263767) and next prime (21114263777).

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114263777) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 840133 + ... + 864899.

It is an arithmetic number, because the mean of its divisors is an integer number (450777600).

Almost surely, 2^21114263772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21114263772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32455987200).

21114263772 is an abundant number, since it is smaller than the sum of its proper divisors (43797710628).

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

21114263772 is a wasteful number, since it uses less digits than its factorization.

21114263772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25000 (or 24995 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The spelling of 21114263772 in words is "twenty-one billion, one hundred fourteen million, two hundred sixty-three thousand, seven hundred seventy-two".