21214026141887 has 2 divisors, whose sum is σ = 21214026141888. Its totient is φ = 21214026141886.

The previous prime is 21214026141881. The next prime is 21214026141949. The reversal of 21214026141887 is 78814162041212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21214026141887 - 2⁸ = 21214026141631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21214026141881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607013070943 + 10607013070944.

It is an arithmetic number, because the mean of its divisors is an integer number (10607013070944).

Almost surely, 2^{21214026141887} is an apocalyptic number.

21214026141887 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214026141887 is an equidigital number, since it uses as much as digits as its factorization.

21214026141887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 47.

The spelling of 21214026141887 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, one hundred forty-one thousand, eight hundred eighty-seven".