421111100 has 18 divisors (see below), whose sum is σ = 913811304. Its totient is φ = 168444400.

The previous prime is 421111091. The next prime is 421111151. The reversal of 421111100 is 1111124.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2105456 + ... + 2105655.

Almost surely, 2^421111100 is an apocalyptic number.

It is an amenable number.

421111100 is an abundant number, since it is smaller than the sum of its proper divisors (492700204).

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

421111100 is a wasteful number, since it uses less digits than its factorization.

421111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4211125 (or 4211118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 421111100 is about 20520.9916914364. The cubic root of 421111100 is about 749.5470450160.

Adding to 421111100 its reverse (1111124), we get a palindrome (422222224).

The spelling of 421111100 in words is "four hundred twenty-one million, one hundred eleven thousand, one hundred".