21601036442 has 8 divisors (see below), whose sum is σ = 32402193696. Its totient is φ = 10800305212.

The previous prime is 21601036441. The next prime is 21601036453. The reversal of 21601036442 is 24463010612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21601036442² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21601036441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101513 + ... + 231315.

It is an arithmetic number, because the mean of its divisors is an integer number (4050274212).

Almost surely, 2^21601036442 is an apocalyptic number.

21601036442 is a deficient number, since it is larger than the sum of its proper divisors (10801157254).

21601036442 is a wasteful number, since it uses less digits than its factorization.

21601036442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213012.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 21601036442 in words is "twenty-one billion, six hundred one million, thirty-six thousand, four hundred forty-two".