11012121004051 has 4 divisors (see below), whose sum is σ = 11031474468600. Its totient is φ = 10992767539504.

The previous prime is 11012121004009. The next prime is 11012121004061. The reversal of 11012121004051 is 15040012121011.

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-11012121004051 is a prime.

It is a super-2 number, since 2×11012121004051² (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 (11012121004061) 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, 9676731421 + ... + 9676732558.

It is an arithmetic number, because the mean of its divisors is an integer number (2757868617150).

Almost surely, 2^{11012121004051} is an apocalyptic number.

11012121004051 is a deficient number, since it is larger than the sum of its proper divisors (19353464549).

11012121004051 is an equidigital number, since it uses as much as digits as its factorization.

11012121004051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19353464548.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 11012121004051 its reverse (15040012121011), we get a palindrome (26052133125062).

The spelling of 11012121004051 in words is "eleven trillion, twelve billion, one hundred twenty-one million, four thousand, fifty-one".