21214026181619 has 2 divisors, whose sum is σ = 21214026181620. Its totient is φ = 21214026181618.

The previous prime is 21214026181553. The next prime is 21214026181709. The reversal of 21214026181619 is 91618162041212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21214026181619 - 2³² = 21209731214323 is a prime.

It is a super-3 number, since 3×21214026181619³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 21214026181619.

It is not a weakly prime, because it can be changed into another prime (21214026187619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607013090809 + 10607013090810.

It is an arithmetic number, because the mean of its divisors is an integer number (10607013090810).

Almost surely, 2^{21214026181619} is an apocalyptic number.

21214026181619 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214026181619 is an equidigital number, since it uses as much as digits as its factorization.

21214026181619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 21214026181619 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, one hundred eighty-one thousand, six hundred nineteen".