21214026106355 has 8 divisors (see below), whose sum is σ = 25515895904064. Its totient is φ = 16931844500800.

The previous prime is 21214026106327. The next prime is 21214026106363. The reversal of 21214026106355 is 55360162041212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21214026106355 - 2¹² = 21214026102259 is a prime.

It is a super-2 number, since 2×21214026106355² (a number of 27 digits) contains 22 as substring.

It is a Duffinian 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, 4922045666 + ... + 4922049975.

It is an arithmetic number, because the mean of its divisors is an integer number (3189486988008).

Almost surely, 2^{21214026106355} is an apocalyptic number.

21214026106355 is a deficient number, since it is larger than the sum of its proper divisors (4301869797709).

21214026106355 is an equidigital number, since it uses as much as digits as its factorization.

21214026106355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9844096077.

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 21214026106355 its reverse (55360162041212), we get a palindrome (76574188147567).

The spelling of 21214026106355 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, one hundred six thousand, three hundred fifty-five".