21214030045351 has 32 divisors (see below), whose sum is σ = 25089699156480. Its totient is φ = 17682770448000.

The previous prime is 21214030045279. The next prime is 21214030045379. The reversal of 21214030045351 is 15354003041212.

It is a cyclic number.

It is not a de Polignac number, because 21214030045351 - 2²¹ = 21214027948199 is a prime.

It is a super-2 number, since 2×21214030045351² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214030045651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381498916 + ... + 381554518.

It is an arithmetic number, because the mean of its divisors is an integer number (784053098640).

Almost surely, 2^{21214030045351} is an apocalyptic number.

21214030045351 is a deficient number, since it is larger than the sum of its proper divisors (3875669111129).

21214030045351 is a wasteful number, since it uses less digits than its factorization.

21214030045351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73447.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 21214030045351 its reverse (15354003041212), we get a palindrome (36568033086563).

The spelling of 21214030045351 in words is "twenty-one trillion, two hundred fourteen billion, thirty million, forty-five thousand, three hundred fifty-one".