211212100201 has 12 divisors (see below), whose sum is σ = 223694787780. Its totient is φ = 199186340640.

The previous prime is 211212100189. The next prime is 211212100207. The reversal of 211212100201 is 102001212112.

It can be written as a sum of positive squares in 2 ways, for example, as 162267174976 + 48944925225 = 402824^2 + 221235^2 .

It is not a de Polignac number, because 211212100201 - 2¹³ = 211212092009 is a prime.

It is a super-2 number, since 2×211212100201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211212100207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1915870 + ... + 2023111.

It is an arithmetic number, because the mean of its divisors is an integer number (18641232315).

Almost surely, 2^211212100201 is an apocalyptic number.

It is an amenable number.

211212100201 is a deficient number, since it is larger than the sum of its proper divisors (12482687579).

211212100201 is an equidigital number, since it uses as much as digits as its factorization.

211212100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939096 (or 3939053 counting only the distinct ones).

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

Adding to 211212100201 its reverse (102001212112), we get a palindrome (313213312313).

The spelling of 211212100201 in words is "two hundred eleven billion, two hundred twelve million, one hundred thousand, two hundred one".