7802111121011 has 4 divisors (see below), whose sum is σ = 7889775291000. Its totient is φ = 7714446951024.

The previous prime is 7802111120963. The next prime is 7802111121043. The reversal of 7802111121011 is 1101211112087.

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

It is a cyclic number.

It is not a de Polignac number, because 7802111121011 - 2²² = 7802106926707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7802111124011) 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, 43832084861 + ... + 43832085038.

It is an arithmetic number, because the mean of its divisors is an integer number (1972443822750).

Almost surely, 2^{7802111121011} is an apocalyptic number.

7802111121011 is a deficient number, since it is larger than the sum of its proper divisors (87664169989).

7802111121011 is an equidigital number, since it uses as much as digits as its factorization.

7802111121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87664169988.

The product of its (nonzero) digits is 224, while the sum is 26.

Adding to 7802111121011 its reverse (1101211112087), we get a palindrome (8903322233098).

The spelling of 7802111121011 in words is "seven trillion, eight hundred two billion, one hundred eleven million, one hundred twenty-one thousand, eleven".