211211222022001 has 8 divisors (see below), whose sum is σ = 214707386340584. Its totient is φ = 207716144325120.

The previous prime is 211211222021983. The next prime is 211211222022023. The reversal of 211211222022001 is 100220222112112.

It can be written as a sum of positive squares in 4 ways, for example, as 3905362487601 + 207305859534400 = 1976199^2 + 14398120^2 .

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 211211222022001 - 2³⁹ = 210661466208113 is a prime.

It is a super-2 number, since 2×211211222022001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211211222022001.

It is not an unprimeable number, because it can be changed into a prime (211211222022301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271263456 + ... + 272040961.

It is an arithmetic number, because the mean of its divisors is an integer number (26838423292573).

Almost surely, 2^{211211222022001} is an apocalyptic number.

It is an amenable number.

211211222022001 is a deficient number, since it is larger than the sum of its proper divisors (3496164318583).

211211222022001 is an equidigital number, since it uses as much as digits as its factorization.

211211222022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543310851.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211211222022001 its reverse (100220222112112), we get a palindrome (311431444134113).

The spelling of 211211222022001 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twenty-two million, twenty-two thousand, one".