21896120026 has 8 divisors (see below), whose sum is σ = 35830014624. Its totient is φ = 9952781820.

The previous prime is 21896120021. The next prime is 21896120033. The reversal of 21896120026 is 62002169812.

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

It is not an unprimeable number, because it can be changed into a prime (21896120021) 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, 497639070 + ... + 497639113.

It is an arithmetic number, because the mean of its divisors is an integer number (4478751828).

Almost surely, 2^21896120026 is an apocalyptic number.

21896120026 is a deficient number, since it is larger than the sum of its proper divisors (13933894598).

21896120026 is a wasteful number, since it uses less digits than its factorization.

21896120026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995278196.

The product of its (nonzero) digits is 20736, while the sum is 37.

Adding to 21896120026 its reverse (62002169812), we get a palindrome (83898289838).

The spelling of 21896120026 in words is "twenty-one billion, eight hundred ninety-six million, one hundred twenty thousand, twenty-six".