11201212012021 has 8 divisors (see below), whose sum is σ = 11217607968600. Its totient is φ = 11184820458240.

The previous prime is 11201212012019. The next prime is 11201212012031. The reversal of 11201212012021 is 12021021210211.

It can be written as a sum of positive squares in 4 ways, for example, as 71722196100 + 11129489815921 = 267810^2 + 3336089^2 .

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 11201212012021 - 2¹ = 11201212012019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201212011986 and 11201212012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201212012031) 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, 4008585 + ... + 6202513.

It is an arithmetic number, because the mean of its divisors is an integer number (1402200996075).

Almost surely, 2^{11201212012021} is an apocalyptic number.

It is an amenable number.

11201212012021 is a deficient number, since it is larger than the sum of its proper divisors (16395956579).

11201212012021 is an equidigital number, since it uses as much as digits as its factorization.

11201212012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201399.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11201212012021 its reverse (12021021210211), we get a palindrome (23222233222232).

The spelling of 11201212012021 in words is "eleven trillion, two hundred one billion, two hundred twelve million, twelve thousand, twenty-one".