210403421220 has 24 divisors (see below), whose sum is σ = 589129579584. Its totient is φ = 56107578976.

The previous prime is 210403421203. The next prime is 210403421311. The reversal of 210403421220 is 22124304012.

It is a super-2 number, since 2×210403421220² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1753361784 + ... + 1753361903.

It is an arithmetic number, because the mean of its divisors is an integer number (24547065816).

Almost surely, 2^210403421220 is an apocalyptic number.

210403421220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210403421220 is an abundant number, since it is smaller than the sum of its proper divisors (378726158364).

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

210403421220 is a wasteful number, since it uses less digits than its factorization.

210403421220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506723699 (or 3506723697 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 210403421220 its reverse (22124304012), we get a palindrome (232527725232).

The spelling of 210403421220 in words is "two hundred ten billion, four hundred three million, four hundred twenty-one thousand, two hundred twenty".