21221211114 has 16 divisors (see below), whose sum is σ = 47158247040. Its totient is φ = 7073737020.

The previous prime is 21221211113. The next prime is 21221211149. The reversal of 21221211114 is 41111212212.

It is a super-2 number, since 2×21221211114² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21221211113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196492642 + ... + 196492749.

It is an arithmetic number, because the mean of its divisors is an integer number (2947390440).

Almost surely, 2^21221211114 is an apocalyptic number.

21221211114 is an abundant number, since it is smaller than the sum of its proper divisors (25937035926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21221211114 is a wasteful number, since it uses less digits than its factorization.

21221211114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392985402 (or 392985396 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 21221211114 its reverse (41111212212), we get a palindrome (62332423326).

The spelling of 21221211114 in words is "twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, one hundred fourteen".