21224000042212 has 24 divisors (see below), whose sum is σ = 41825595393792. Its totient is φ = 9336070399200.

The previous prime is 21224000042197. The next prime is 21224000042227.

21224000042212 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (21224000042197) and next prime (21224000042227).

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 7780057303 + ... + 7780060030.

It is an arithmetic number, because the mean of its divisors is an integer number (1742733141408).

Almost surely, 2^{21224000042212} is an apocalyptic number.

21224000042212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21224000042212 is a deficient number, since it is larger than the sum of its proper divisors (20601595351580).

21224000042212 is a wasteful number, since it uses less digits than its factorization.

21224000042212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15560117379 (or 15560117377 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

It can be divided in two parts, 212240000 and 42212, that added together give a palindrome (212282212).

The spelling of 21224000042212 in words is "twenty-one trillion, two hundred twenty-four billion, forty-two thousand, two hundred twelve".