420111165121 has 8 divisors (see below), whose sum is σ = 428115870720. Its totient is φ = 412109351472.

The previous prime is 420111165119. The next prime is 420111165169. The reversal of 420111165121 is 121561111024.

It is a happy number.

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 420111165121 - 2¹ = 420111165119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420111165101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428551 + ... + 1011868.

It is an arithmetic number, because the mean of its divisors is an integer number (53514483840).

Almost surely, 2^420111165121 is an apocalyptic number.

It is an amenable number.

420111165121 is a deficient number, since it is larger than the sum of its proper divisors (8004705599).

420111165121 is a wasteful number, since it uses less digits than its factorization.

420111165121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445975.

The product of its (nonzero) digits is 480, while the sum is 25.

Adding to 420111165121 its reverse (121561111024), we get a palindrome (541672276145).

The spelling of 420111165121 in words is "four hundred twenty billion, one hundred eleven million, one hundred sixty-five thousand, one hundred twenty-one".