211021212001 has 16 divisors (see below), whose sum is σ = 229364006400. Its totient is φ = 193406054400.

The previous prime is 211021211981. The next prime is 211021212011. The reversal of 211021212001 is 100212120112.

It is a cyclic number.

It is not a de Polignac number, because 211021212001 - 2⁷ = 211021211873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211021212011) 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, 1906971 + ... + 2014591.

It is an arithmetic number, because the mean of its divisors is an integer number (14335250400).

Almost surely, 2^211021212001 is an apocalyptic number.

It is an amenable number.

211021212001 is a deficient number, since it is larger than the sum of its proper divisors (18342794399).

211021212001 is a wasteful number, since it uses less digits than its factorization.

211021212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111000.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211021212001 its reverse (100212120112), we get a palindrome (311233332113).

The spelling of 211021212001 in words is "two hundred eleven billion, twenty-one million, two hundred twelve thousand, one".