11454200121 has 32 divisors (see below), whose sum is σ = 19233786880. Its totient is φ = 5901263424.

The previous prime is 11454200117. The next prime is 11454200129. The reversal of 11454200121 is 12100245411.

It is not a de Polignac number, because 11454200121 - 2² = 11454200117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (11454200129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476131 + ... + 499608.

It is an arithmetic number, because the mean of its divisors is an integer number (601055840).

Almost surely, 2^11454200121 is an apocalyptic number.

It is an amenable number.

11454200121 is a deficient number, since it is larger than the sum of its proper divisors (7779586759).

11454200121 is a wasteful number, since it uses less digits than its factorization.

11454200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975805.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 11454200121 its reverse (12100245411), we get a palindrome (23554445532).

It can be divided in two parts, 11454 and 200121, that added together give a triangular number (211575 = T₆₅₀).

The spelling of 11454200121 in words is "eleven billion, four hundred fifty-four million, two hundred thousand, one hundred twenty-one".