21227211076 has 24 divisors (see below), whose sum is σ = 37229419584. Its totient is φ = 10590259680.

The previous prime is 21227211067. The next prime is 21227211097. The reversal of 21227211076 is 67011272212.

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, 6044161 + ... + 6047671.

It is an arithmetic number, because the mean of its divisors is an integer number (1551225816).

Almost surely, 2^21227211076 is an apocalyptic number.

It is an amenable number.

21227211076 is a deficient number, since it is larger than the sum of its proper divisors (16002208508).

21227211076 is a wasteful number, since it uses less digits than its factorization.

21227211076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411 (or 6409 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

Adding to 21227211076 its reverse (67011272212), we get a palindrome (88238483288).

The spelling of 21227211076 in words is "twenty-one billion, two hundred twenty-seven million, two hundred eleven thousand, seventy-six".