211421023459 has 2 divisors, whose sum is σ = 211421023460. Its totient is φ = 211421023458.

The previous prime is 211421023343. The next prime is 211421023553. The reversal of 211421023459 is 954320124112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211421023459 - 2¹⁷ = 211420892387 is a prime.

It is not a weakly prime, because it can be changed into another prime (211421003459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105710511729 + 105710511730.

It is an arithmetic number, because the mean of its divisors is an integer number (105710511730).

Almost surely, 2^211421023459 is an apocalyptic number.

211421023459 is a deficient number, since it is larger than the sum of its proper divisors (1).

211421023459 is an equidigital number, since it uses as much as digits as its factorization.

211421023459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 211421023459 in words is "two hundred eleven billion, four hundred twenty-one million, twenty-three thousand, four hundred fifty-nine".