421122322012 has 24 divisors (see below), whose sum is σ = 842258579456. Its totient is φ = 180478009008.

The previous prime is 421122321973. The next prime is 421122322013. The reversal of 421122322012 is 210223221124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421122322013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2823133 + ... + 2968555.

Almost surely, 2^421122322012 is an apocalyptic number.

It is an amenable number.

421122322012 is an abundant number, since it is smaller than the sum of its proper divisors (421136257444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421122322012 is a wasteful number, since it uses less digits than its factorization.

421122322012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248857 (or 248855 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 421122322012 its reverse (210223221124), we get a palindrome (631345543136).

The spelling of 421122322012 in words is "four hundred twenty-one billion, one hundred twenty-two million, three hundred twenty-two thousand, twelve".