2111122222001 has 8 divisors (see below), whose sum is σ = 2273819520000. Its totient is φ = 1948468249872.

The previous prime is 2111122221983. The next prime is 2111122222003. The reversal of 2111122222001 is 1002222211112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111122222001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111122222003) 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, 10730225 + ... + 10925198.

It is an arithmetic number, because the mean of its divisors is an integer number (284227440000).

Almost surely, 2^{2111122222001} is an apocalyptic number.

It is an amenable number.

2111122222001 is a deficient number, since it is larger than the sum of its proper divisors (162697297999).

2111122222001 is a wasteful number, since it uses less digits than its factorization.

2111122222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21662935.

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

Adding to 2111122222001 its reverse (1002222211112), we get a palindrome (3113344433113).

The spelling of 2111122222001 in words is "two trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, one".