22001022011 has 4 divisors (see below), whose sum is σ = 22022827800. Its totient is φ = 21979216224.

The previous prime is 22001022007. The next prime is 22001022031. The reversal of 22001022011 is 11022010022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22001022011 - 2² = 22001022007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001021983 and 22001022001.

It is not an unprimeable number, because it can be changed into a prime (22001022031) 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, 10901381 + ... + 10903398.

It is an arithmetic number, because the mean of its divisors is an integer number (5505706950).

Almost surely, 2^22001022011 is an apocalyptic number.

22001022011 is a deficient number, since it is larger than the sum of its proper divisors (21805789).

22001022011 is a wasteful number, since it uses less digits than its factorization.

22001022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21805788.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22001022011 its reverse (11022010022), we get a palindrome (33023032033).

The spelling of 22001022011 in words is "twenty-two billion, one million, twenty-two thousand, eleven".