21301012442 has 16 divisors (see below), whose sum is σ = 33637410240. Its totient is φ = 10088683488.

The previous prime is 21301012429. The next prime is 21301012463. The reversal of 21301012442 is 24421010312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316118 + ... + 377534.

It is an arithmetic number, because the mean of its divisors is an integer number (2102338140).

Almost surely, 2^21301012442 is an apocalyptic number.

21301012442 is a deficient number, since it is larger than the sum of its proper divisors (12336397798).

21301012442 is a wasteful number, since it uses less digits than its factorization.

21301012442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70565.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21301012442 its reverse (24421010312), we get a palindrome (45722022754).

The spelling of 21301012442 in words is "twenty-one billion, three hundred one million, twelve thousand, four hundred forty-two".