545412021121 has 16 divisors (see below), whose sum is σ = 602201380608. Its totient is φ = 489845232000.

The previous prime is 545412021079. The next prime is 545412021127. The reversal of 545412021121 is 121120214545.

It is a cyclic number.

It is not a de Polignac number, because 545412021121 - 2²⁷ = 545277803393 is a prime.

It is a super-3 number, since 3×545412021121³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545412021121.

It is not an unprimeable number, because it can be changed into a prime (545412021127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29385 + ... + 1044838.

It is an arithmetic number, because the mean of its divisors is an integer number (37637586288).

Almost surely, 2^545412021121 is an apocalyptic number.

It is an amenable number.

545412021121 is a deficient number, since it is larger than the sum of its proper divisors (56789359487).

545412021121 is a wasteful number, since it uses less digits than its factorization.

545412021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074792.

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 545412021121 its reverse (121120214545), we get a palindrome (666532235666).

The spelling of 545412021121 in words is "five hundred forty-five billion, four hundred twelve million, twenty-one thousand, one hundred twenty-one".