22001121011 has 16 divisors (see below), whose sum is σ = 23255282688. Its totient is φ = 20781684000.

The previous prime is 22001120993. The next prime is 22001121049. The reversal of 22001121011 is 11012110022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001121011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001120983 and 22001121001.

It is not an unprimeable number, because it can be changed into a prime (22001121091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2217161 + ... + 2227061.

It is an arithmetic number, because the mean of its divisors is an integer number (1453455168).

Almost surely, 2^22001121011 is an apocalyptic number.

22001121011 is a deficient number, since it is larger than the sum of its proper divisors (1254161677).

22001121011 is a wasteful number, since it uses less digits than its factorization.

22001121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11642.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22001121011 its reverse (11012110022), we get a palindrome (33013231033).

It can be divided in two parts, 2200 and 1121011, that added together give a palindrome (1123211).

The spelling of 22001121011 in words is "twenty-two billion, one million, one hundred twenty-one thousand, eleven".