21422140000 has 120 divisors (see below), whose sum is σ = 52807414968. Its totient is φ = 8551680000.

The previous prime is 21422139967. The next prime is 21422140001. The reversal of 21422140000 is 4122412.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422140001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15739320 + ... + 15740680.

Almost surely, 2^21422140000 is an apocalyptic number.

21422140000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21422140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26403707484).

21422140000 is an abundant number, since it is smaller than the sum of its proper divisors (31385274968).

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

21422140000 is an equidigital number, since it uses as much as digits as its factorization.

21422140000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21422140000 its reverse (4122412), we get a palindrome (21426262412).

The spelling of 21422140000 in words is "twenty-one billion, four hundred twenty-two million, one hundred forty thousand".