210021001010010 has 48 divisors (see below), whose sum is σ = 546060187427040. Its totient is φ = 56005027469280.

The previous prime is 210021001009999. The next prime is 210021001010011. The reversal of 210021001010010 is 10010100120012.

It is a happy number.

210021001010010 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 210021001009974 and 210021001010001.

It is not an unprimeable number, because it can be changed into a prime (210021001010011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3048136 + ... + 20720355.

It is an arithmetic number, because the mean of its divisors is an integer number (11376253904730).

Almost surely, 2^{210021001010010} is an apocalyptic number.

210021001010010 is an abundant number, since it is smaller than the sum of its proper divisors (336039186417030).

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

210021001010010 is a wasteful number, since it uses less digits than its factorization.

210021001010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23866683 (or 23866680 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 210021001010010 its reverse (10010100120012), we get a palindrome (220031101130022).

The spelling of 210021001010010 in words is "two hundred ten trillion, twenty-one billion, one million, ten thousand, ten".