21201201041 has 16 divisors (see below), whose sum is σ = 23711390208. Its totient is φ = 18861292800.

The previous prime is 21201200987. The next prime is 21201201061. The reversal of 21201201041 is 14010210212.

It is a happy number.

It is not a de Polignac number, because 21201201041 - 2²² = 21197006737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21201201061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445130 + ... + 490451.

It is an arithmetic number, because the mean of its divisors is an integer number (1481961888).

Almost surely, 2^21201201041 is an apocalyptic number.

It is an amenable number.

21201201041 is a deficient number, since it is larger than the sum of its proper divisors (2510189167).

21201201041 is a wasteful number, since it uses less digits than its factorization.

21201201041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935672.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21201201041 its reverse (14010210212), we get a palindrome (35211411253).

The spelling of 21201201041 in words is "twenty-one billion, two hundred one million, two hundred one thousand, forty-one".