21214035644322 has 128 divisors (see below), whose sum is σ = 46730824777728. Its totient is φ = 6391034726400.

The previous prime is 21214035644293. The next prime is 21214035644341. The reversal of 21214035644322 is 22344653041212.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1214234047 + ... + 1214251517.

It is an arithmetic number, because the mean of its divisors is an integer number (365084568576).

Almost surely, 2^{21214035644322} is an apocalyptic number.

21214035644322 is an abundant number, since it is smaller than the sum of its proper divisors (25516789133406).

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

21214035644322 is a wasteful number, since it uses less digits than its factorization.

21214035644322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20464.

The product of its (nonzero) digits is 276480, while the sum is 39.

Adding to 21214035644322 its reverse (22344653041212), we get a palindrome (43558688685534).

The spelling of 21214035644322 in words is "twenty-one trillion, two hundred fourteen billion, thirty-five million, six hundred forty-four thousand, three hundred twenty-two".