7812001101011 has 4 divisors (see below), whose sum is σ = 7873512920832. Its totient is φ = 7750489281192.

The previous prime is 7812001100999. The next prime is 7812001101067. The reversal of 7812001101011 is 1101011002187.

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-7812001101011 is a prime.

It is a super-2 number, since 2×7812001101011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7812001101071) 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, 30755909720 + ... + 30755909973.

It is an arithmetic number, because the mean of its divisors is an integer number (1968378230208).

Almost surely, 2^{7812001101011} is an apocalyptic number.

7812001101011 is a deficient number, since it is larger than the sum of its proper divisors (61511819821).

7812001101011 is a wasteful number, since it uses less digits than its factorization.

7812001101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61511819820.

The product of its (nonzero) digits is 112, while the sum is 23.

Adding to 7812001101011 its reverse (1101011002187), we get a palindrome (8913012103198).

The spelling of 7812001101011 in words is "seven trillion, eight hundred twelve billion, one million, one hundred one thousand, eleven".