21042222224012 has 12 divisors (see below), whose sum is σ = 40171515155016. Its totient is φ = 9564646465440.

The previous prime is 21042222224003. The next prime is 21042222224027.

21042222224012 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21042222224012² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239116161593 + ... + 239116161680.

It is an arithmetic number, because the mean of its divisors is an integer number (3347626262918).

Almost surely, 2^{21042222224012} is an apocalyptic number.

21042222224012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21042222224012 is a deficient number, since it is larger than the sum of its proper divisors (19129292931004).

21042222224012 is a wasteful number, since it uses less digits than its factorization.

21042222224012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478232323288 (or 478232323286 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

It can be divided in two parts, 2104222 and 2224012, that added together give a palindrome (4328234).

The spelling of 21042222224012 in words is "twenty-one trillion, forty-two billion, two hundred twenty-two million, two hundred twenty-four thousand, twelve".