13345110021 has 16 divisors (see below), whose sum is σ = 17857583744. Its totient is φ = 8864722944.

The previous prime is 13345110011. The next prime is 13345110059. The reversal of 13345110021 is 12001154331.

It is not a de Polignac number, because 13345110021 - 2⁶ = 13345109957 is a prime.

It is a super-2 number, since 2×13345110021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13345110021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13345110011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2133120 + ... + 2139366.

It is an arithmetic number, because the mean of its divisors is an integer number (1116098984).

Almost surely, 2^13345110021 is an apocalyptic number.

It is an amenable number.

13345110021 is a deficient number, since it is larger than the sum of its proper divisors (4512473723).

13345110021 is a wasteful number, since it uses less digits than its factorization.

13345110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 13345110021 its reverse (12001154331), we get a palindrome (25346264352).

The spelling of 13345110021 in words is "thirteen billion, three hundred forty-five million, one hundred ten thousand, twenty-one".