21403214311 has 2 divisors, whose sum is σ = 21403214312. Its totient is φ = 21403214310.

The previous prime is 21403214303. The next prime is 21403214347. The reversal of 21403214311 is 11341230412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21403214311 - 2³ = 21403214303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21403284311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10701607155 + 10701607156.

It is an arithmetic number, because the mean of its divisors is an integer number (10701607156).

Almost surely, 2^21403214311 is an apocalyptic number.

21403214311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21403214311 is an equidigital number, since it uses as much as digits as its factorization.

21403214311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21403214311 its reverse (11341230412), we get a palindrome (32744444723).

The spelling of 21403214311 in words is "twenty-one billion, four hundred three million, two hundred fourteen thousand, three hundred eleven".