21144004212322 has 32 divisors (see below), whose sum is σ = 34498065618432. Its totient is φ = 9678727413504.

The previous prime is 21144004212257. The next prime is 21144004212323. The reversal of 21144004212322 is 22321240044112.

It is not an unprimeable number, because it can be changed into a prime (21144004212323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2792943 + ... + 7077325.

It is an arithmetic number, because the mean of its divisors is an integer number (1078064550576).

Almost surely, 2^{21144004212322} is an apocalyptic number.

21144004212322 is a deficient number, since it is larger than the sum of its proper divisors (13354061406110).

21144004212322 is a wasteful number, since it uses less digits than its factorization.

21144004212322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288362.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21144004212322 its reverse (22321240044112), we get a palindrome (43465244256434).

The spelling of 21144004212322 in words is "twenty-one trillion, one hundred forty-four billion, four million, two hundred twelve thousand, three hundred twenty-two".