211222122001 has 8 divisors (see below), whose sum is σ = 230850062208. Its totient is φ = 191665170000.

The previous prime is 211222121959. The next prime is 211222122011. The reversal of 211222122001 is 100221222112.

It is a happy number.

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 211222122001 - 2²¹ = 211220024849 is a prime.

It is a super-2 number, since 2×211222122001² (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 (211222122011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17740825 + ... + 17752726.

It is an arithmetic number, because the mean of its divisors is an integer number (28856257776).

Almost surely, 2^211222122001 is an apocalyptic number.

It is an amenable number.

211222122001 is a deficient number, since it is larger than the sum of its proper divisors (19627940207).

211222122001 is a wasteful number, since it uses less digits than its factorization.

211222122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35494103.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211222122001 its reverse (100221222112), we get a palindrome (311443344113).

The spelling of 211222122001 in words is "two hundred eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, one".