202021221102 has 16 divisors (see below), whose sum is σ = 410072927232. Its totient is φ = 66335326200.

The previous prime is 202021221067. The next prime is 202021221107. The reversal of 202021221102 is 201122120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202021221107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251269774 + ... + 251270577.

It is an arithmetic number, because the mean of its divisors is an integer number (25629557952).

Almost surely, 2^202021221102 is an apocalyptic number.

202021221102 is an abundant number, since it is smaller than the sum of its proper divisors (208051706130).

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

202021221102 is a wasteful number, since it uses less digits than its factorization.

202021221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502540423.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202021221102 its reverse (201122120202), we get a palindrome (403143341304).

The spelling of 202021221102 in words is "two hundred two billion, twenty-one million, two hundred twenty-one thousand, one hundred two".