21312021301214 has 16 divisors (see below), whose sum is σ = 36534960482688. Its totient is φ = 9133706708952.

The previous prime is 21312021301177. The next prime is 21312021301271. The reversal of 21312021301214 is 41210312021312.

It is a self number, because there is not a number n which added to its sum of digits gives 21312021301214.

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, 9444029 + ... + 11481015.

It is an arithmetic number, because the mean of its divisors is an integer number (2283435030168).

Almost surely, 2^{21312021301214} is an apocalyptic number.

21312021301214 is a deficient number, since it is larger than the sum of its proper divisors (15222939181474).

21312021301214 is a wasteful number, since it uses less digits than its factorization.

21312021301214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784319.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21312021301214 its reverse (41210312021312), we get a palindrome (62522333322526).

The spelling of 21312021301214 in words is "twenty-one trillion, three hundred twelve billion, twenty-one million, three hundred one thousand, two hundred fourteen".