21122432414 has 4 divisors (see below), whose sum is σ = 31683648624. Its totient is φ = 10561216206.

The previous prime is 21122432413. The next prime is 21122432447. The reversal of 21122432414 is 41423422112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122432413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280608102 + ... + 5280608105.

It is an arithmetic number, because the mean of its divisors is an integer number (7920912156).

Almost surely, 2^21122432414 is an apocalyptic number.

21122432414 is a deficient number, since it is larger than the sum of its proper divisors (10561216210).

21122432414 is a wasteful number, since it uses less digits than its factorization.

21122432414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561216209.

The product of its digits is 3072, while the sum is 26.

Adding to 21122432414 its reverse (41423422112), we get a palindrome (62545854526).

The spelling of 21122432414 in words is "twenty-one billion, one hundred twenty-two million, four hundred thirty-two thousand, four hundred fourteen".