211121212212001 has 32 divisors (see below), whose sum is σ = 262488116620800. Its totient is φ = 165346544871936.

The previous prime is 211121212211993. The next prime is 211121212212041. The reversal of 211121212212001 is 100212212121112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211121212212001 - 2³ = 211121212211993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211121212212001.

It is not an unprimeable number, because it can be changed into a prime (211121212212041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19910341 + ... + 28612306.

It is an arithmetic number, because the mean of its divisors is an integer number (8202753644400).

Almost surely, 2^{211121212212001} is an apocalyptic number.

It is an amenable number.

211121212212001 is a deficient number, since it is larger than the sum of its proper divisors (51366904408799).

211121212212001 is a wasteful number, since it uses less digits than its factorization.

211121212212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48523153.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211121212212001 its reverse (100212212121112), we get a palindrome (311333424333113).

The spelling of 211121212212001 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, one".