21222100486 has 8 divisors (see below), whose sum is σ = 31837314960. Its totient is φ = 10609662168.

The previous prime is 21222100481. The next prime is 21222100489. The reversal of 21222100486 is 68400122212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222100481) 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, 674821 + ... + 705568.

It is an arithmetic number, because the mean of its divisors is an integer number (3979664370).

Almost surely, 2^21222100486 is an apocalyptic number.

21222100486 is a deficient number, since it is larger than the sum of its proper divisors (10615214474).

21222100486 is a wasteful number, since it uses less digits than its factorization.

21222100486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388078.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 21222100486 its reverse (68400122212), we get a palindrome (89622222698).

The spelling of 21222100486 in words is "twenty-one billion, two hundred twenty-two million, one hundred thousand, four hundred eighty-six".