21040211201 has 8 divisors (see below), whose sum is σ = 21757158144. Its totient is φ = 20335114800.

The previous prime is 21040211117. The next prime is 21040211207. The reversal of 21040211201 is 10211204012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21040211201 - 2¹⁸ = 21039949057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21040211207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2959025 + ... + 2966126.

It is an arithmetic number, because the mean of its divisors is an integer number (2719644768).

Almost surely, 2^21040211201 is an apocalyptic number.

It is an amenable number.

21040211201 is a deficient number, since it is larger than the sum of its proper divisors (716946943).

21040211201 is an equidigital number, since it uses as much as digits as its factorization.

21040211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5925271.

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

Adding to 21040211201 its reverse (10211204012), we get a palindrome (31251415213).

The spelling of 21040211201 in words is "twenty-one billion, forty million, two hundred eleven thousand, two hundred one".