21444022411412 has 6 divisors (see below), whose sum is σ = 37527039219978. Its totient is φ = 10722011205704.

The previous prime is 21444022411381. The next prime is 21444022411429. The reversal of 21444022411412 is 21411422044412.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19768747794436 + 1675274616976 = 4446206^2 + 1294324^2 .

It is a super-2 number, since 2×21444022411412² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2680502801423 + ... + 2680502801430.

It is an arithmetic number, because the mean of its divisors is an integer number (6254506536663).

Almost surely, 2^{21444022411412} is an apocalyptic number.

It is an amenable number.

21444022411412 is a deficient number, since it is larger than the sum of its proper divisors (16083016808566).

21444022411412 is a wasteful number, since it uses less digits than its factorization.

21444022411412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361005602857 (or 5361005602855 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 21444022411412 its reverse (21411422044412), we get a palindrome (42855444455824).

The spelling of 21444022411412 in words is "twenty-one trillion, four hundred forty-four billion, twenty-two million, four hundred eleven thousand, four hundred twelve".