202121220022 has 8 divisors (see below), whose sum is σ = 303804381456. Its totient is φ = 100853092872.

The previous prime is 202121220011. The next prime is 202121220023. The reversal of 202121220022 is 220022121202.

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

It is a junction number, because it is equal to n+sod(n) for n = 202121219978 and 202121220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121220023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103757353 + ... + 103759300.

It is an arithmetic number, because the mean of its divisors is an integer number (37975547682).

Almost surely, 2^202121220022 is an apocalyptic number.

202121220022 is a deficient number, since it is larger than the sum of its proper divisors (101683161434).

202121220022 is a wasteful number, since it uses less digits than its factorization.

202121220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207517142.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202121220022 its reverse (220022121202), we get a palindrome (422143341224).

The spelling of 202121220022 in words is "two hundred two billion, one hundred twenty-one million, two hundred twenty thousand, twenty-two".