221201102021202 has 96 divisors (see below), whose sum is σ = 486605673837504. Its totient is φ = 72613414896000.

The previous prime is 221201102021093. The next prime is 221201102021239. The reversal of 221201102021202 is 202120201102122.

It is a happy number.

221201102021202 is a `hidden beast` number, since 221 + 201 + 1 + 0 + 20 + 21 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 437607253 + ... + 438112439.

It is an arithmetic number, because the mean of its divisors is an integer number (5068809102474).

Almost surely, 2^{221201102021202} is an apocalyptic number.

221201102021202 is an abundant number, since it is smaller than the sum of its proper divisors (265404571816302).

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

221201102021202 is a wasteful number, since it uses less digits than its factorization.

221201102021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506584 (or 506581 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221201102021202 its reverse (202120201102122), we get a palindrome (423321303123324).

The spelling of 221201102021202 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred two million, twenty-one thousand, two hundred two".