21201122100011 has 8 divisors (see below), whose sum is σ = 24236126148864. Its totient is φ = 18167686131240.

The previous prime is 21201122099999. The next prime is 21201122100023. The reversal of 21201122100011 is 11000122110212.

It is an interprime number because it is at equal distance from previous prime (21201122099999) and next prime (21201122100023).

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 21201122100011 - 2²⁶ = 21201054991147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21201122100031) 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, 391991045 + ... + 392045126.

It is an arithmetic number, because the mean of its divisors is an integer number (3029515768608).

Almost surely, 2^{21201122100011} is an apocalyptic number.

21201122100011 is a deficient number, since it is larger than the sum of its proper divisors (3035004048853).

21201122100011 is an equidigital number, since it uses as much as digits as its factorization.

21201122100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784040041.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21201122100011 its reverse (11000122110212), we get a palindrome (32201244210223).

The spelling of 21201122100011 in words is "twenty-one trillion, two hundred one billion, one hundred twenty-two million, one hundred thousand, eleven".