21442214211 has 32 divisors (see below), whose sum is σ = 32342788608. Its totient is φ = 12521226240.

The previous prime is 21442214197. The next prime is 21442214239. The reversal of 21442214211 is 11241224412.

It is a happy number.

It is not a de Polignac number, because 21442214211 - 2⁵ = 21442214179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21442214011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40515 + ... + 211011.

It is an arithmetic number, because the mean of its divisors is an integer number (1010712144).

Almost surely, 2^21442214211 is an apocalyptic number.

21442214211 is a deficient number, since it is larger than the sum of its proper divisors (10900574397).

21442214211 is a wasteful number, since it uses less digits than its factorization.

21442214211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170651.

The product of its digits is 1024, while the sum is 24.

Adding to 21442214211 its reverse (11241224412), we get a palindrome (32683438623).

The spelling of 21442214211 in words is "twenty-one billion, four hundred forty-two million, two hundred fourteen thousand, two hundred eleven".