21442013010 has 160 divisors (see below), whose sum is σ = 63929283264. Its totient is φ = 5112720000.

The previous prime is 21442012997. The next prime is 21442013029. The reversal of 21442013010 is 1031024412.

21442013010 is a `hidden beast` number, since 214 + 420 + 1 + 30 + 1 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 523785 + ... + 563235.

Almost surely, 2^21442013010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21442013010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31964641632).

21442013010 is an abundant number, since it is smaller than the sum of its proper divisors (42487270254).

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

21442013010 is a wasteful number, since it uses less digits than its factorization.

21442013010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39542 (or 39533 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21442013010 its reverse (1031024412), we get a palindrome (22473037422).

The spelling of 21442013010 in words is "twenty-one billion, four hundred forty-two million, thirteen thousand, ten".