11212021220001 has 64 divisors (see below), whose sum is σ = 17955780820992. Its totient is φ = 6088509000000.

The previous prime is 11212021219999. The next prime is 11212021220003. The reversal of 11212021220001 is 10002212021211.

It is an interprime number because it is at equal distance from previous prime (11212021219999) and next prime (11212021220003).

It is not a de Polignac number, because 11212021220001 - 2¹ = 11212021219999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212021220003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11118256 + ... + 12084686.

It is an arithmetic number, because the mean of its divisors is an integer number (280559075328).

Almost surely, 2^{11212021220001} is an apocalyptic number.

It is an amenable number.

11212021220001 is a deficient number, since it is larger than the sum of its proper divisors (6743759600991).

11212021220001 is a wasteful number, since it uses less digits than its factorization.

11212021220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966794.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11212021220001 its reverse (10002212021211), we get a palindrome (21214233241212).

The spelling of 11212021220001 in words is "eleven trillion, two hundred twelve billion, twenty-one million, two hundred twenty thousand, one".