421213210100 has 18 divisors (see below), whose sum is σ = 914032666134. Its totient is φ = 168485284000.

The previous prime is 421213210087. The next prime is 421213210111. The reversal of 421213210100 is 1012312124.

It can be written as a sum of positive squares in 3 ways, for example, as 47730888676 + 373482321424 = 218474^2 + 611132^2 .

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, 2106065951 + ... + 2106066150.

It is an arithmetic number, because the mean of its divisors is an integer number (50779592563).

Almost surely, 2^421213210100 is an apocalyptic number.

It is an amenable number.

421213210100 is an abundant number, since it is smaller than the sum of its proper divisors (492819456034).

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

421213210100 is a wasteful number, since it uses less digits than its factorization.

421213210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212132115 (or 4212132108 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 421213210100 its reverse (1012312124), we get a palindrome (422225522224).

The spelling of 421213210100 in words is "four hundred twenty-one billion, two hundred thirteen million, two hundred ten thousand, one hundred".