21222012011012 has 24 divisors (see below), whose sum is σ = 37190917253952. Its totient is φ = 10596037508000.

The previous prime is 21222012010987. The next prime is 21222012011059. The reversal of 21222012011012 is 21011021022212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47242262 + ... + 47689362.

It is an arithmetic number, because the mean of its divisors is an integer number (1549621552248).

Almost surely, 2^{21222012011012} is an apocalyptic number.

It is an amenable number.

21222012011012 is a deficient number, since it is larger than the sum of its proper divisors (15968905242940).

21222012011012 is a wasteful number, since it uses less digits than its factorization.

21222012011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463819 (or 463817 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21222012011012 its reverse (21011021022212), we get a palindrome (42233033033224).

The spelling of 21222012011012 in words is "twenty-one trillion, two hundred twenty-two billion, twelve million, eleven thousand, twelve".