221121021202 has 8 divisors (see below), whose sum is σ = 331687590912. Its totient is φ = 110558490900.

The previous prime is 221121021197. The next prime is 221121021203. The reversal of 221121021202 is 202120121122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221121021203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869074 + ... + 1094317.

It is an arithmetic number, because the mean of its divisors is an integer number (41460948864).

Almost surely, 2^221121021202 is an apocalyptic number.

221121021202 is a deficient number, since it is larger than the sum of its proper divisors (110566569710).

221121021202 is a wasteful number, since it uses less digits than its factorization.

221121021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019704.

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

Adding to 221121021202 its reverse (202120121122), we get a palindrome (423241142324).

The spelling of 221121021202 in words is "two hundred twenty-one billion, one hundred twenty-one million, twenty-one thousand, two hundred two".