2120222311111 has 4 divisors (see below), whose sum is σ = 2120226019632. Its totient is φ = 2120218602592.

The previous prime is 2120222311099. The next prime is 2120222311121. The reversal of 2120222311111 is 1111132220212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120222311111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120222311121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794971 + ... + 2207356.

It is an arithmetic number, because the mean of its divisors is an integer number (530056504908).

Almost surely, 2^{2120222311111} is an apocalyptic number.

2120222311111 is a deficient number, since it is larger than the sum of its proper divisors (3708521).

2120222311111 is an equidigital number, since it uses as much as digits as its factorization.

2120222311111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708520.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2120222311111 its reverse (1111132220212), we get a palindrome (3231354531323).

The spelling of 2120222311111 in words is "two trillion, one hundred twenty billion, two hundred twenty-two million, three hundred eleven thousand, one hundred eleven".