210100021010010 has 128 divisors (see below), whose sum is σ = 579742609824000. Its totient is φ = 54080125860096.

The previous prime is 210100021009999. The next prime is 210100021010021. The reversal of 210100021010010 is 10010120001012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (210100021009999) and next prime (210100021010021).

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 = 210100021009974 and 210100021010001.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25424229 + ... + 32658711.

It is an arithmetic number, because the mean of its divisors is an integer number (4529239139250).

Almost surely, 2^{210100021010010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210100021010010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289871304912000).

210100021010010 is an abundant number, since it is smaller than the sum of its proper divisors (369642588813990).

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

210100021010010 is a wasteful number, since it uses less digits than its factorization.

210100021010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7238237 (or 7238231 counting only the distinct ones).

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

Adding to 210100021010010 its reverse (10010120001012), we get a palindrome (220110141011022).

The spelling of 210100021010010 in words is "two hundred ten trillion, one hundred billion, twenty-one million, ten thousand, ten".