211012212001 has 4 divisors (see below), whose sum is σ = 211469939604. Its totient is φ = 210554484400.

The previous prime is 211012211983. The next prime is 211012212041. The reversal of 211012212001 is 100212210112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119733300625 + 91278911376 = 346025^2 + 302124^2 .

It is a cyclic number.

It is not a de Polignac number, because 211012212001 - 2⁷ = 211012211873 is a prime.

It is a super-2 number, since 2×211012212001² (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 (211012212041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228863110 + ... + 228864031.

It is an arithmetic number, because the mean of its divisors is an integer number (52867484901).

Almost surely, 2^211012212001 is an apocalyptic number.

It is an amenable number.

211012212001 is a deficient number, since it is larger than the sum of its proper divisors (457727603).

211012212001 is an equidigital number, since it uses as much as digits as its factorization.

211012212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457727602.

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

Adding to 211012212001 its reverse (100212210112), we get a palindrome (311224422113).

The spelling of 211012212001 in words is "two hundred eleven billion, twelve million, two hundred twelve thousand, one".