421055027121 has 16 divisors (see below), whose sum is σ = 561947040000. Its totient is φ = 280433315088.

The previous prime is 421055027053. The next prime is 421055027171. The reversal of 421055027121 is 121720550124.

It is a happy number.

It is not a de Polignac number, because 421055027121 - 2¹⁰ = 421055026097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421055027171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14760130 + ... + 14788628.

It is an arithmetic number, because the mean of its divisors is an integer number (35121690000).

Almost surely, 2^421055027121 is an apocalyptic number.

It is an amenable number.

421055027121 is a deficient number, since it is larger than the sum of its proper divisors (140892012879).

421055027121 is a wasteful number, since it uses less digits than its factorization.

421055027121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33068.

The product of its (nonzero) digits is 5600, while the sum is 30.

Adding to 421055027121 its reverse (121720550124), we get a palindrome (542775577245).

The spelling of 421055027121 in words is "four hundred twenty-one billion, fifty-five million, twenty-seven thousand, one hundred twenty-one".