211101220201001 has 8 divisors (see below), whose sum is σ = 240712703577864. Its totient is φ = 183400155106560.

The previous prime is 211101220200961. The next prime is 211101220201097. The reversal of 211101220201001 is 100102022101112.

It can be written as a sum of positive squares in 4 ways, for example, as 18077463097600 + 193023757103401 = 4251760^2 + 13893299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211101220201001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211101220291001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477604570370 + ... + 477604570811.

It is an arithmetic number, because the mean of its divisors is an integer number (30089087947233).

Almost surely, 2^{211101220201001} is an apocalyptic number.

It is an amenable number.

211101220201001 is a deficient number, since it is larger than the sum of its proper divisors (29611483376863).

211101220201001 is a wasteful number, since it uses less digits than its factorization.

211101220201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955209141211.

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

Adding to 211101220201001 its reverse (100102022101112), we get a palindrome (311203242302113).

The spelling of 211101220201001 in words is "two hundred eleven trillion, one hundred one billion, two hundred twenty million, two hundred one thousand, one".