21214036503662 has 4 divisors (see below), whose sum is σ = 31821054755496. Its totient is φ = 10607018251830.

The previous prime is 21214036503631. The next prime is 21214036503679. The reversal of 21214036503662 is 26630563041212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5303509125914 + ... + 5303509125917.

It is an arithmetic number, because the mean of its divisors is an integer number (7955263688874).

Almost surely, 2^{21214036503662} is an apocalyptic number.

21214036503662 is a deficient number, since it is larger than the sum of its proper divisors (10607018251834).

21214036503662 is a wasteful number, since it uses less digits than its factorization.

21214036503662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10607018251833.

The product of its (nonzero) digits is 311040, while the sum is 41.

Adding to 21214036503662 its reverse (26630563041212), we get a palindrome (47844599544874).

The spelling of 21214036503662 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred three thousand, six hundred sixty-two".