211121212001 has 8 divisors (see below), whose sum is σ = 241370539200. Its totient is φ = 180894173328.

The previous prime is 211121211953. The next prime is 211121212009. The reversal of 211121212001 is 100212121112.

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 211121212001 - 2¹⁸ = 211120949857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211121212009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5551826 + ... + 5589723.

It is an arithmetic number, because the mean of its divisors is an integer number (30171317400).

Almost surely, 2^211121212001 is an apocalyptic number.

It is an amenable number.

211121212001 is a deficient number, since it is larger than the sum of its proper divisors (30249327199).

211121212001 is a wasteful number, since it uses less digits than its factorization.

211121212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11144263.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211121212001 its reverse (100212121112), we get a palindrome (311333333113).

The spelling of 211121212001 in words is "two hundred eleven billion, one hundred twenty-one million, two hundred twelve thousand, one".