1911002220011 has 4 divisors (see below), whose sum is σ = 1922048475792. Its totient is φ = 1899955964232.

The previous prime is 1911002219977. The next prime is 1911002220037. The reversal of 1911002220011 is 1100222001191.

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-1911002220011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1911002228011) 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, 5523127631 + ... + 5523127976.

It is an arithmetic number, because the mean of its divisors is an integer number (480512118948).

Almost surely, 2^{1911002220011} is an apocalyptic number.

1911002220011 is a deficient number, since it is larger than the sum of its proper divisors (11046255781).

1911002220011 is a wasteful number, since it uses less digits than its factorization.

1911002220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046255780.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1911002220011 in words is "one trillion, nine hundred eleven billion, two million, two hundred twenty thousand, eleven".