5221420100 has 36 divisors (see below), whose sum is σ = 12202060164. Its totient is φ = 1927908480.

The previous prime is 5221420093. The next prime is 5221420123. The reversal of 5221420100 is 10241225.

It can be written as a sum of positive squares in 6 ways, for example, as 101445184 + 5119974916 = 10072^2 + 71554^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2006939 + ... + 2009538.

Almost surely, 2^5221420100 is an apocalyptic number.

5221420100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5221420100 is an abundant number, since it is smaller than the sum of its proper divisors (6980640064).

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

5221420100 is a wasteful number, since it uses less digits than its factorization.

5221420100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016504 (or 4016497 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 5221420100 is about 72259.3945449310. The cubic root of 5221420100 is about 1734.8537887513.

Adding to 5221420100 its reverse (10241225), we get a palindrome (5231661325).

The spelling of 5221420100 in words is "five billion, two hundred twenty-one million, four hundred twenty thousand, one hundred".