11212021001 has 8 divisors (see below), whose sum is σ = 11366684640. Its totient is φ = 11058281248.

The previous prime is 11212020991. The next prime is 11212021039. The reversal of 11212021001 is 10012021211.

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 11212021001 - 2¹⁰ = 11212019977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212021061) 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, 206516 + ... + 255093.

It is an arithmetic number, because the mean of its divisors is an integer number (1420835580).

Almost surely, 2^11212021001 is an apocalyptic number.

It is an amenable number.

11212021001 is a deficient number, since it is larger than the sum of its proper divisors (154663639).

11212021001 is a wasteful number, since it uses less digits than its factorization.

11212021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461943.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11212021001 its reverse (10012021211), we get a palindrome (21224042212).

The spelling of 11212021001 in words is "eleven billion, two hundred twelve million, twenty-one thousand, one".