21202022222211 has 16 divisors (see below), whose sum is σ = 29244628569600. Its totient is φ = 13647064011168.

The previous prime is 21202022222207. The next prime is 21202022222219. The reversal of 21202022222211 is 11222222020212.

It is not a de Polignac number, because 21202022222211 - 2² = 21202022222207 is a prime.

It is a super-2 number, since 2×21202022222211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21202022222219) 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, 3741750 + ... + 7510308.

It is an arithmetic number, because the mean of its divisors is an integer number (1827789285600).

Almost surely, 2^{21202022222211} is an apocalyptic number.

21202022222211 is a deficient number, since it is larger than the sum of its proper divisors (8042606347389).

21202022222211 is a wasteful number, since it uses less digits than its factorization.

21202022222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3833258.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 21202022222211 its reverse (11222222020212), we get a palindrome (32424244242423).

The spelling of 21202022222211 in words is "twenty-one trillion, two hundred two billion, twenty-two million, two hundred twenty-two thousand, two hundred eleven".