421111212 has 48 divisors (see below), whose sum is σ = 1058386560. Its totient is φ = 129886848.

The previous prime is 421111183. The next prime is 421111213. The reversal of 421111212 is 212111124.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 421111191 and 421111200.

It is not an unprimeable number, because it can be changed into a prime (421111213) 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, 11673 + ... + 31280.

It is an arithmetic number, because the mean of its divisors is an integer number (22049720).

Almost surely, 2^421111212 is an apocalyptic number.

It is an amenable number.

421111212 is an abundant number, since it is smaller than the sum of its proper divisors (637275348).

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

421111212 is a wasteful number, since it uses less digits than its factorization.

421111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43022 (or 43020 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 421111212 is about 20520.9944203491. The cubic root of 421111212 is about 749.5471114666.

Adding to 421111212 its reverse (212111124), we get a palindrome (633222336).

It can be divided in two parts, 4211112 and 12, that added together give a palindrome (4211124).

The spelling of 421111212 in words is "four hundred twenty-one million, one hundred eleven thousand, two hundred twelve".