21220133231414 has 32 divisors (see below), whose sum is σ = 35147293784064. Its totient is φ = 9546659125920.

The previous prime is 21220133231399. The next prime is 21220133231443. The reversal of 21220133231414 is 41413233102212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18779414 + ... + 19877289.

It is an arithmetic number, because the mean of its divisors is an integer number (1098352930752).

Almost surely, 2^{21220133231414} is an apocalyptic number.

21220133231414 is a deficient number, since it is larger than the sum of its proper divisors (13927160552650).

21220133231414 is a wasteful number, since it uses less digits than its factorization.

21220133231414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38657252.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21220133231414 its reverse (41413233102212), we get a palindrome (62633366333626).

The spelling of 21220133231414 in words is "twenty-one trillion, two hundred twenty billion, one hundred thirty-three million, two hundred thirty-one thousand, four hundred fourteen".