11212010220021 has 16 divisors (see below), whose sum is σ = 16136477574336. Its totient is φ = 6883763947776.

The previous prime is 11212010220017. The next prime is 11212010220041. The reversal of 11212010220021 is 12002201021211.

It is not a de Polignac number, because 11212010220021 - 2² = 11212010220017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212010220041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331954755 + ... + 331988528.

It is an arithmetic number, because the mean of its divisors is an integer number (1008529848396).

Almost surely, 2^{11212010220021} is an apocalyptic number.

It is an amenable number.

11212010220021 is a deficient number, since it is larger than the sum of its proper divisors (4924467354315).

11212010220021 is a wasteful number, since it uses less digits than its factorization.

11212010220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663943732.

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

Adding to 11212010220021 its reverse (12002201021211), we get a palindrome (23214211241232).

The spelling of 11212010220021 in words is "eleven trillion, two hundred twelve billion, ten million, two hundred twenty thousand, twenty-one".