210221001221010 has 64 divisors (see below), whose sum is σ = 543563025667200. Its totient is φ = 51725508779520.

The previous prime is 210221001220957. The next prime is 210221001221039. The reversal of 210221001221010 is 10122100122012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109459360 + ... + 111363339.

It is an arithmetic number, because the mean of its divisors is an integer number (8493172276050).

Almost surely, 2^{210221001221010} is an apocalyptic number.

210221001221010 is an abundant number, since it is smaller than the sum of its proper divisors (333342024446190).

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

210221001221010 is a wasteful number, since it uses less digits than its factorization.

210221001221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220825163.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210221001221010 its reverse (10122100122012), we get a palindrome (220343101343022).

The spelling of 210221001221010 in words is "two hundred ten trillion, two hundred twenty-one billion, one million, two hundred twenty-one thousand, ten".