221001222012010 has 256 divisors, whose sum is σ = 482636926033920. Its totient is φ = 71977178880000.

The previous prime is 221001222012001. The next prime is 221001222012019. The reversal of 221001222012010 is 10210222100122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221001222012001) and next prime (221001222012019).

It is not an unprimeable number, because it can be changed into a prime (221001222012019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 406498777 + ... + 407042083.

It is an arithmetic number, because the mean of its divisors is an integer number (1885300492320).

Almost surely, 2^{221001222012010} is an apocalyptic number.

221001222012010 is an abundant number, since it is smaller than the sum of its proper divisors (261635704021910).

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

221001222012010 is a wasteful number, since it uses less digits than its factorization.

221001222012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543533.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221001222012010 its reverse (10210222100122), we get a palindrome (231211444112132).

The spelling of 221001222012010 in words is "two hundred twenty-one trillion, one billion, two hundred twenty-two million, twelve thousand, ten".