221001022201000 has 32 divisors (see below), whose sum is σ = 517142391952680. Its totient is φ = 88400408880000.

The previous prime is 221001022200997. The next prime is 221001022201033. The reversal of 221001022201000 is 102220100122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 148153056050596 + 72847966150404 = 12171814^2 + 8535102^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110500510101 + ... + 110500512100.

Almost surely, 2^{221001022201000} is an apocalyptic number.

221001022201000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221001022201000 is an abundant number, since it is smaller than the sum of its proper divisors (296141369751680).

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

221001022201000 is a wasteful number, since it uses less digits than its factorization.

221001022201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221001022222 (or 221001022208 counting only the distinct ones).

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

Adding to 221001022201000 its reverse (102220100122), we get a palindrome (221103242301122).

The spelling of 221001022201000 in words is "two hundred twenty-one trillion, one billion, twenty-two million, two hundred one thousand".