21320105342354 has 32 divisors (see below), whose sum is σ = 39392643521280. Its totient is φ = 8427374021952.

The previous prime is 21320105342281. The next prime is 21320105342369. The reversal of 21320105342354 is 45324350102312.

It is a super-2 number, since 2×21320105342354² (a number of 27 digits) contains 22 as substring.

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, 48065894 + ... + 48507425.

It is an arithmetic number, because the mean of its divisors is an integer number (1231020110040).

Almost surely, 2^{21320105342354} is an apocalyptic number.

21320105342354 is a deficient number, since it is larger than the sum of its proper divisors (18072538178926).

21320105342354 is a wasteful number, since it uses less digits than its factorization.

21320105342354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96574554.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 21320105342354 its reverse (45324350102312), we get a palindrome (66644455444666).

The spelling of 21320105342354 in words is "twenty-one trillion, three hundred twenty billion, one hundred five million, three hundred forty-two thousand, three hundred fifty-four".