21222002011011 has 8 divisors (see below), whose sum is σ = 28636918376640. Its totient is φ = 13977543493032.

The previous prime is 21222002010977. The next prime is 21222002011019. The reversal of 21222002011011 is 11011020022212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21222002011011 - 2²¹ = 21221999913859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21222002011019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42614461621 + ... + 42614462118.

It is an arithmetic number, because the mean of its divisors is an integer number (3579614797080).

Almost surely, 2^{21222002011011} is an apocalyptic number.

21222002011011 is a deficient number, since it is larger than the sum of its proper divisors (7414916365629).

21222002011011 is an equidigital number, since it uses as much as digits as its factorization.

21222002011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85228923825.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21222002011011 its reverse (11011020022212), we get a palindrome (32233022033223).

The spelling of 21222002011011 in words is "twenty-one trillion, two hundred twenty-two billion, two million, eleven thousand, eleven".