210021012102 has 32 divisors (see below), whose sum is σ = 458773943040. Its totient is φ = 63566858720.

The previous prime is 210021012029. The next prime is 210021012107. The reversal of 210021012102 is 201210120012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021012107) 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 15 ways as a sum of consecutive naturals, for example, 1841013 + ... + 1951760.

It is an arithmetic number, because the mean of its divisors is an integer number (14336685720).

Almost surely, 2^210021012102 is an apocalyptic number.

210021012102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210021012102 is an abundant number, since it is smaller than the sum of its proper divisors (248752930938).

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

210021012102 is a wasteful number, since it uses less digits than its factorization.

210021012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793628.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210021012102 its reverse (201210120012), we get a palindrome (411231132114).

The spelling of 210021012102 in words is "two hundred ten billion, twenty-one million, twelve thousand, one hundred two".