21412221412 has 12 divisors (see below), whose sum is σ = 39675586860. Its totient is φ = 10076339456.

The previous prime is 21412221409. The next prime is 21412221421.

21412221412 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 7446654436 + 13965566976 = 86294^2 + 118176^2 .

It is a super-3 number, since 3×21412221412³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157442737 + ... + 157442872.

It is an arithmetic number, because the mean of its divisors is an integer number (3306298905).

Almost surely, 2^21412221412 is an apocalyptic number.

It is an amenable number.

21412221412 is a deficient number, since it is larger than the sum of its proper divisors (18263365448).

21412221412 is a wasteful number, since it uses less digits than its factorization.

21412221412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314885630 (or 314885628 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The spelling of 21412221412 in words is "twenty-one billion, four hundred twelve million, two hundred twenty-one thousand, four hundred twelve".