211001020221001 has 8 divisors (see below), whose sum is σ = 211781842020864. Its totient is φ = 210220214747040.

The previous prime is 211001020220993. The next prime is 211001020221023. The reversal of 211001020221001 is 100122020100112.

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 211001020221001 - 2³ = 211001020220993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211001020221701) 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, 22125741 + ... + 30191893.

It is an arithmetic number, because the mean of its divisors is an integer number (26472730252608).

Almost surely, 2^{211001020221001} is an apocalyptic number.

It is an amenable number.

211001020221001 is a deficient number, since it is larger than the sum of its proper divisors (780821799863).

211001020221001 is an equidigital number, since it uses as much as digits as its factorization.

211001020221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8162951.

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

Adding to 211001020221001 its reverse (100122020100112), we get a palindrome (311123040321113).

The spelling of 211001020221001 in words is "two hundred eleven trillion, one billion, twenty million, two hundred twenty-one thousand, one".