21214026141605 has 16 divisors (see below), whose sum is σ = 27778678833600. Its totient is φ = 15424165944960.

The previous prime is 21214026141587. The next prime is 21214026141619. The reversal of 21214026141605 is 50614162041212.

It is not a de Polignac number, because 21214026141605 - 2¹² = 21214026137509 is a prime.

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, 52505720 + ... + 52908209.

It is an arithmetic number, because the mean of its divisors is an integer number (1736167427100).

Almost surely, 2^{21214026141605} is an apocalyptic number.

It is an amenable number.

21214026141605 is a deficient number, since it is larger than the sum of its proper divisors (6564652691995).

21214026141605 is a wasteful number, since it uses less digits than its factorization.

21214026141605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105417604.

The product of its (nonzero) digits is 23040, while the sum is 35.

Adding to 21214026141605 its reverse (50614162041212), we get a palindrome (71828188182817).

The spelling of 21214026141605 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, one hundred forty-one thousand, six hundred five".