202220021101 has 4 divisors (see below), whose sum is σ = 231108595552. Its totient is φ = 173331446652.

The previous prime is 202220021071. The next prime is 202220021147. The reversal of 202220021101 is 101120022202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-202220021101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220021161) 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, 14444287215 + ... + 14444287228.

It is an arithmetic number, because the mean of its divisors is an integer number (57777148888).

Almost surely, 2^202220021101 is an apocalyptic number.

It is an amenable number.

202220021101 is a deficient number, since it is larger than the sum of its proper divisors (28888574451).

202220021101 is an equidigital number, since it uses as much as digits as its factorization.

202220021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28888574450.

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

Adding to 202220021101 its reverse (101120022202), we get a palindrome (303340043303).

The spelling of 202220021101 in words is "two hundred two billion, two hundred twenty million, twenty-one thousand, one hundred one".