420121311112 has 8 divisors (see below), whose sum is σ = 787727458350. Its totient is φ = 210060655552.

The previous prime is 420121311097. The next prime is 420121311131. The reversal of 420121311112 is 211113121024.

It can be written as a sum of positive squares in only one way, i.e., 416471459716 + 3649851396 = 645346^2 + 60414^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 420121311112.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 26257581937 + ... + 26257581952.

Almost surely, 2^420121311112 is an apocalyptic number.

It is an amenable number.

420121311112 is a deficient number, since it is larger than the sum of its proper divisors (367606147238).

420121311112 is a wasteful number, since it uses less digits than its factorization.

420121311112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52515163895 (or 52515163891 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 420121311112 its reverse (211113121024), we get a palindrome (631234432136).

The spelling of 420121311112 in words is "four hundred twenty billion, one hundred twenty-one million, three hundred eleven thousand, one hundred twelve".