221003031211010 has 128 divisors (see below), whose sum is σ = 464469158016000. Its totient is φ = 75140783198208.

The previous prime is 221003031211003. The next prime is 221003031211037. The reversal of 221003031211010 is 10112130300122.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 221003031211010.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 7532849 + ... + 22332708.

It is an arithmetic number, because the mean of its divisors is an integer number (3628665297000).

Almost surely, 2^{221003031211010} is an apocalyptic number.

221003031211010 is an abundant number, since it is smaller than the sum of its proper divisors (243466126804990).

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

221003031211010 is a wasteful number, since it uses less digits than its factorization.

221003031211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29865708.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 221003031211010 its reverse (10112130300122), we get a palindrome (231115161511132).

The spelling of 221003031211010 in words is "two hundred twenty-one trillion, three billion, thirty-one million, two hundred eleven thousand, ten".