21222321023211 has 32 divisors (see below), whose sum is σ = 36099097571328. Its totient is φ = 10768196708640.

The previous prime is 21222321023207. The next prime is 21222321023213. The reversal of 21222321023211 is 11232012322212.

It is not a de Polignac number, because 21222321023211 - 2² = 21222321023207 is a prime.

It is a super-2 number, since 2×21222321023211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21222321023213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1068263551 + ... + 1068283416.

It is an arithmetic number, because the mean of its divisors is an integer number (1128096799104).

Almost surely, 2^{21222321023211} is an apocalyptic number.

21222321023211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21222321023211 is a deficient number, since it is larger than the sum of its proper divisors (14876776548117).

21222321023211 is a wasteful number, since it uses less digits than its factorization.

21222321023211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136547031.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21222321023211 its reverse (11232012322212), we get a palindrome (32454333345423).

The spelling of 21222321023211 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred twenty-one million, twenty-three thousand, two hundred eleven".