11451146120221 has 4 divisors (see below), whose sum is σ = 11451246720732. Its totient is φ = 11451045519712.

The previous prime is 11451146120207. The next prime is 11451146120237. The reversal of 11451146120221 is 12202164115411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7598016602500 + 3853129517721 = 2756450^2 + 1962939^2 .

It is a cyclic number.

It is not a de Polignac number, because 11451146120221 - 2⁵ = 11451146120189 is a prime.

It is a super-2 number, since 2×11451146120221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451146120201) 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, 50129320 + ... + 50357233.

It is an arithmetic number, because the mean of its divisors is an integer number (2862811680183).

Almost surely, 2^{11451146120221} is an apocalyptic number.

It is an amenable number.

11451146120221 is a deficient number, since it is larger than the sum of its proper divisors (100600511).

11451146120221 is a wasteful number, since it uses less digits than its factorization.

11451146120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100600510.

The product of its (nonzero) digits is 3840, while the sum is 31.

The spelling of 11451146120221 in words is "eleven trillion, four hundred fifty-one billion, one hundred forty-six million, one hundred twenty thousand, two hundred twenty-one".