21221122211214 has 128 divisors (see below), whose sum is σ = 46766635352064. Its totient is φ = 6390353088000.

The previous prime is 21221122211213. The next prime is 21221122211251. The reversal of 21221122211214 is 41211222112212.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221122211213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2759211109 + ... + 2759218799.

It is an arithmetic number, because the mean of its divisors is an integer number (365364338688).

Almost surely, 2^{21221122211214} is an apocalyptic number.

21221122211214 is an abundant number, since it is smaller than the sum of its proper divisors (25545513140850).

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

21221122211214 is a wasteful number, since it uses less digits than its factorization.

21221122211214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14742.

The product of its digits is 512, while the sum is 24.

Adding to 21221122211214 its reverse (41211222112212), we get a palindrome (62432344323426).

The spelling of 21221122211214 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred eleven thousand, two hundred fourteen".