21436114043 has 2 divisors, whose sum is σ = 21436114044. Its totient is φ = 21436114042.

The previous prime is 21436113983. The next prime is 21436114069. The reversal of 21436114043 is 34041163412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21436114043 - 2³⁴ = 4256244859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21436113997 and 21436114015.

It is not a weakly prime, because it can be changed into another prime (21436116043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10718057021 + 10718057022.

It is an arithmetic number, because the mean of its divisors is an integer number (10718057022).

Almost surely, 2^21436114043 is an apocalyptic number.

21436114043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21436114043 is an equidigital number, since it uses as much as digits as its factorization.

21436114043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21436114043 its reverse (34041163412), we get a palindrome (55477277455).

The spelling of 21436114043 in words is "twenty-one billion, four hundred thirty-six million, one hundred fourteen thousand, forty-three".