21022022021211 has 16 divisors (see below), whose sum is σ = 31208754585600. Its totient is φ = 13985423131464.

The previous prime is 21022022021201. The next prime is 21022022021227. The reversal of 21022022021211 is 11212022022012.

It is a happy number.

21022022021211 is a `hidden beast` number, since 2 + 1 + 0 + 220 + 220 + 212 + 11 = 666.

It is not a de Polignac number, because 21022022021211 - 2¹⁴ = 21022022004827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022022021201) 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, 812715051 + ... + 812740916.

It is an arithmetic number, because the mean of its divisors is an integer number (1950547161600).

Almost surely, 2^{21022022021211} is an apocalyptic number.

21022022021211 is a deficient number, since it is larger than the sum of its proper divisors (10186732564389).

21022022021211 is a wasteful number, since it uses less digits than its factorization.

21022022021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625456455 (or 1625456449 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21022022021211 its reverse (11212022022012), we get a palindrome (32234044043223).

The spelling of 21022022021211 in words is "twenty-one trillion, twenty-two billion, twenty-two million, twenty-one thousand, two hundred eleven".