21214026550045 has 16 divisors (see below), whose sum is σ = 29099349227520. Its totient is φ = 14543847512064.

The previous prime is 21214026550037. The next prime is 21214026550063. The reversal of 21214026550045 is 54005562041212.

It is a cyclic number.

It is not a de Polignac number, because 21214026550045 - 2³ = 21214026550037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21214026549986 and 21214026550013.

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, 60521725 + ... + 60871234.

It is an arithmetic number, because the mean of its divisors is an integer number (1818709326720).

Almost surely, 2^{21214026550045} is an apocalyptic number.

It is an amenable number.

21214026550045 is a deficient number, since it is larger than the sum of its proper divisors (7885322677475).

21214026550045 is a wasteful number, since it uses less digits than its factorization.

21214026550045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121397964.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 21214026550045 its reverse (54005562041212), we get a palindrome (75219588591257).

The spelling of 21214026550045 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, five hundred fifty thousand, forty-five".