21332220012242 has 16 divisors (see below), whose sum is σ = 32072805116352. Its totient is φ = 10641292282320.

The previous prime is 21332220012241. The next prime is 21332220012307. The reversal of 21332220012242 is 24221002223312.

It is a super-2 number, since 2×21332220012242² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21332220012241) 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, 4024433 + ... + 7672059.

It is an arithmetic number, because the mean of its divisors is an integer number (2004550319772).

Almost surely, 2^{21332220012242} is an apocalyptic number.

21332220012242 is a deficient number, since it is larger than the sum of its proper divisors (10740585104110).

21332220012242 is a wasteful number, since it uses less digits than its factorization.

21332220012242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654433.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21332220012242 its reverse (24221002223312), we get a palindrome (45553222235554).

The spelling of 21332220012242 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred twenty million, twelve thousand, two hundred forty-two".