211211022100001 has 12 divisors (see below), whose sum is σ = 268030313760240. Its totient is φ = 164580017220360.

The previous prime is 211211022099983. The next prime is 211211022100027. The reversal of 211211022100001 is 100001220112112.

It is not a de Polignac number, because 211211022100001 - 2²⁶ = 211210954991137 is a prime.

It is a super-2 number, since 2×211211022100001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211211022102001) 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, 195928591391 + ... + 195928592468.

It is an arithmetic number, because the mean of its divisors is an integer number (22335859480020).

Almost surely, 2^{211211022100001} is an apocalyptic number.

It is an amenable number.

211211022100001 is a deficient number, since it is larger than the sum of its proper divisors (56819291660239).

211211022100001 is a wasteful number, since it uses less digits than its factorization.

211211022100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391857183884 (or 391857183877 counting only the distinct ones).

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

Adding to 211211022100001 its reverse (100001220112112), we get a palindrome (311212242212113).

The spelling of 211211022100001 in words is "two hundred eleven trillion, two hundred eleven billion, twenty-two million, one hundred thousand, one".