11012121601651 has 4 divisors (see below), whose sum is σ = 11012136761992. Its totient is φ = 11012106441312.

The previous prime is 11012121601603. The next prime is 11012121601727. The reversal of 11012121601651 is 15610612121011.

11012121601651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-11012121601651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012121605651) 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, 6432705 + ... + 7962658.

It is an arithmetic number, because the mean of its divisors is an integer number (2753034190498).

Almost surely, 2^{11012121601651} is an apocalyptic number.

11012121601651 is a deficient number, since it is larger than the sum of its proper divisors (15160341).

11012121601651 is an equidigital number, since it uses as much as digits as its factorization.

11012121601651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15160340.

The product of its (nonzero) digits is 720, while the sum is 28.

Adding to 11012121601651 its reverse (15610612121011), we get a palindrome (26622733722662).

The spelling of 11012121601651 in words is "eleven trillion, twelve billion, one hundred twenty-one million, six hundred one thousand, six hundred fifty-one".