21114434201 has 16 divisors (see below), whose sum is σ = 24484569600. Its totient is φ = 17833652928.

The previous prime is 21114434183. The next prime is 21114434279. The reversal of 21114434201 is 10243441112.

It is not a de Polignac number, because 21114434201 - 2²² = 21110239897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114434701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243971 + ... + 318983.

It is an arithmetic number, because the mean of its divisors is an integer number (1530285600).

Almost surely, 2^21114434201 is an apocalyptic number.

It is an amenable number.

21114434201 is a deficient number, since it is larger than the sum of its proper divisors (3370135399).

21114434201 is an equidigital number, since it uses as much as digits as its factorization.

21114434201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75608.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21114434201 its reverse (10243441112), we get a palindrome (31357875313).

The spelling of 21114434201 in words is "twenty-one billion, one hundred fourteen million, four hundred thirty-four thousand, two hundred one".