221000002122010 has 64 divisors (see below), whose sum is σ = 407234543760000. Its totient is φ = 86305298107392.

The previous prime is 221000002121963. The next prime is 221000002122019. The reversal of 221000002122010 is 10221200000122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221000002122019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15509853366 + ... + 15509867614.

It is an arithmetic number, because the mean of its divisors is an integer number (6363039746250).

Almost surely, 2^{221000002122010} is an apocalyptic number.

221000002122010 is a deficient number, since it is larger than the sum of its proper divisors (186234541637990).

221000002122010 is a wasteful number, since it uses less digits than its factorization.

221000002122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28015.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221000002122010 its reverse (10221200000122), we get a palindrome (231221202122132).

The spelling of 221000002122010 in words is "two hundred twenty-one trillion, two million, one hundred twenty-two thousand, ten".