211001021210001 has 16 divisors (see below), whose sum is σ = 315205456747968. Its totient is φ = 124423206609600.

The previous prime is 211001021209973. The next prime is 211001021210011. The reversal of 211001021210001 is 100012120100112.

It is not a de Polignac number, because 211001021210001 - 2¹⁴ = 211001021193617 is a prime.

It is a super-2 number, since 2×211001021210001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211001021210011) 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, 86405003370 + ... + 86405005811.

It is an arithmetic number, because the mean of its divisors is an integer number (19700341046748).

Almost surely, 2^{211001021210001} is an apocalyptic number.

It is an amenable number.

211001021210001 is a deficient number, since it is larger than the sum of its proper divisors (104204435537967).

211001021210001 is a wasteful number, since it uses less digits than its factorization.

211001021210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172810009232.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211001021210001 its reverse (100012120100112), we get a palindrome (311013141310113).

The spelling of 211001021210001 in words is "two hundred eleven trillion, one billion, twenty-one million, two hundred ten thousand, one".