200421312102 has 48 divisors (see below), whose sum is σ = 473795262720. Its totient is φ = 60724479600.

The previous prime is 200421312101. The next prime is 200421312107. The reversal of 200421312102 is 201213124002.

It is a happy number.

200421312102 is a `hidden beast` number, since 2 + 0 + 0 + 421 + 31 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200421312101) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1286799 + ... + 1434117.

It is an arithmetic number, because the mean of its divisors is an integer number (9870734640).

Almost surely, 2^200421312102 is an apocalyptic number.

200421312102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

200421312102 is an abundant number, since it is smaller than the sum of its proper divisors (273373950618).

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

200421312102 is a wasteful number, since it uses less digits than its factorization.

200421312102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154209 (or 154206 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 200421312102 its reverse (201213124002), we get a palindrome (401634436104).

The spelling of 200421312102 in words is "two hundred billion, four hundred twenty-one million, three hundred twelve thousand, one hundred two".