21122124543214 has 16 divisors (see below), whose sum is σ = 32202780135696. Its totient is φ = 10387866614400.

The previous prime is 21122124543203. The next prime is 21122124543257. The reversal of 21122124543214 is 41234542122112.

It is a super-2 number, since 2×21122124543214² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122124543214.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24251574 + ... + 25107430.

It is an arithmetic number, because the mean of its divisors is an integer number (2012673758481).

Almost surely, 2^{21122124543214} is an apocalyptic number.

21122124543214 is a deficient number, since it is larger than the sum of its proper divisors (11080655592482).

21122124543214 is a wasteful number, since it uses less digits than its factorization.

21122124543214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058211.

The product of its digits is 30720, while the sum is 34.

Adding to 21122124543214 its reverse (41234542122112), we get a palindrome (62356666665326).

The spelling of 21122124543214 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred twenty-four million, five hundred forty-three thousand, two hundred fourteen".