21041222214044 has 6 divisors (see below), whose sum is σ = 36822138874584. Its totient is φ = 10520611107020.

The previous prime is 21041222214043. The next prime is 21041222214091. The reversal of 21041222214044 is 44041222214012.

It is a junction number, because it is equal to n+sod(n) for n = 21041222213998 and 21041222214016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041222214043) by changing a digit.

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 as a sum of consecutive naturals, namely, 2630152776752 + ... + 2630152776759.

It is an arithmetic number, because the mean of its divisors is an integer number (6137023145764).

Almost surely, 2^{21041222214044} is an apocalyptic number.

It is an amenable number.

21041222214044 is a deficient number, since it is larger than the sum of its proper divisors (15780916660540).

21041222214044 is a wasteful number, since it uses less digits than its factorization.

21041222214044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260305553515 (or 5260305553513 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 21041222214044 its reverse (44041222214012), we get a palindrome (65082444428056).

The spelling of 21041222214044 in words is "twenty-one trillion, forty-one billion, two hundred twenty-two million, two hundred fourteen thousand, forty-four".