11455120123021 has 8 divisors (see below), whose sum is σ = 11568829999104. Its totient is φ = 11341415989200.

The previous prime is 11455120123001. The next prime is 11455120123087. The reversal of 11455120123021 is 12032102155411.

11455120123021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11455120123021 - 2⁵ = 11455120122989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11455120123001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630880 + ... + 5461846.

It is an arithmetic number, because the mean of its divisors is an integer number (1446103749888).

Almost surely, 2^{11455120123021} is an apocalyptic number.

It is an amenable number.

11455120123021 is a deficient number, since it is larger than the sum of its proper divisors (113709876083).

11455120123021 is a wasteful number, since it uses less digits than its factorization.

11455120123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871131.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 11455120123021 its reverse (12032102155411), we get a palindrome (23487222278432).

The spelling of 11455120123021 in words is "eleven trillion, four hundred fifty-five billion, one hundred twenty million, one hundred twenty-three thousand, twenty-one".