22221022011 has 16 divisors (see below), whose sum is σ = 30078713088. Its totient is φ = 14589136800.

The previous prime is 22221021967. The next prime is 22221022013. The reversal of 22221022011 is 11022012222.

It is not a de Polignac number, because 22221022011 - 2⁹ = 22221021499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22221022013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135681 + ... + 250701.

It is an arithmetic number, because the mean of its divisors is an integer number (1879919568).

Almost surely, 2^22221022011 is an apocalyptic number.

22221022011 is a deficient number, since it is larger than the sum of its proper divisors (7857691077).

22221022011 is a wasteful number, since it uses less digits than its factorization.

22221022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116002.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22221022011 its reverse (11022012222), we get a palindrome (33243034233).

The spelling of 22221022011 in words is "twenty-two billion, two hundred twenty-one million, twenty-two thousand, eleven".