21111012210201 has 8 divisors (see below), whose sum is σ = 28908773477184. Its totient is φ = 13693629541680.

The previous prime is 21111012210137. The next prime is 21111012210209. The reversal of 21111012210201 is 10201221011112.

It is a happy number.

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

It is not a de Polignac number, because 21111012210201 - 2⁶ = 21111012210137 is a prime.

It is a super-2 number, since 2×21111012210201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21111012210209) 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, 95094649485 + ... + 95094649706.

It is an arithmetic number, because the mean of its divisors is an integer number (3613596684648).

Almost surely, 2^{21111012210201} is an apocalyptic number.

It is an amenable number.

21111012210201 is a deficient number, since it is larger than the sum of its proper divisors (7797761266983).

21111012210201 is a wasteful number, since it uses less digits than its factorization.

21111012210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190189299231.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21111012210201 its reverse (10201221011112), we get a palindrome (31312233221313).

The spelling of 21111012210201 in words is "twenty-one trillion, one hundred eleven billion, twelve million, two hundred ten thousand, two hundred one".