22000021211 has 16 divisors (see below), whose sum is σ = 25284039936. Its totient is φ = 18751494816.

The previous prime is 22000021129. The next prime is 22000021231. The reversal of 22000021211 is 11212000022.

It is a happy number.

It is not a de Polignac number, because 22000021211 - 2³⁴ = 4820152027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22000021192 and 22000021201.

It is not an unprimeable number, because it can be changed into a prime (22000021231) 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, 1385660 + ... + 1401446.

It is an arithmetic number, because the mean of its divisors is an integer number (1580252496).

Almost surely, 2^22000021211 is an apocalyptic number.

22000021211 is a deficient number, since it is larger than the sum of its proper divisors (3284018725).

22000021211 is a wasteful number, since it uses less digits than its factorization.

22000021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16898.

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

Adding to 22000021211 its reverse (11212000022), we get a palindrome (33212021233).

The spelling of 22000021211 in words is "twenty-two billion, twenty-one thousand, two hundred eleven".