211122222100001 has 4 divisors (see below), whose sum is σ = 211122266173104. Its totient is φ = 211122178026900.

The previous prime is 211122222099977. The next prime is 211122222100007. The reversal of 211122222100001 is 100001222221112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211122222100001 is a prime.

It is a super-5 number, since 5×211122222100001⁵ (a number of 73 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211122222100007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13833215 + ... + 24770996.

It is an arithmetic number, because the mean of its divisors is an integer number (52780566543276).

Almost surely, 2^{211122222100001} is an apocalyptic number.

It is an amenable number.

211122222100001 is a deficient number, since it is larger than the sum of its proper divisors (44073103).

211122222100001 is an equidigital number, since it uses as much as digits as its factorization.

211122222100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44073102.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211122222100001 its reverse (100001222221112), we get a palindrome (311123444321113).

The spelling of 211122222100001 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred thousand, one".