202122444421 has 8 divisors (see below), whose sum is σ = 204158029824. Its totient is φ = 200087533200.

The previous prime is 202122444373. The next prime is 202122444439. The reversal of 202122444421 is 124444221202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 202122444421 - 2⁹ = 202122443909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202122444421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202122444481) 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, 445276 + ... + 776218.

It is an arithmetic number, because the mean of its divisors is an integer number (25519753728).

Almost surely, 2^202122444421 is an apocalyptic number.

It is an amenable number.

202122444421 is a deficient number, since it is larger than the sum of its proper divisors (2035585403).

202122444421 is a wasteful number, since it uses less digits than its factorization.

202122444421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337091.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 202122444421 its reverse (124444221202), we get a palindrome (326566665623).

The spelling of 202122444421 in words is "two hundred two billion, one hundred twenty-two million, four hundred forty-four thousand, four hundred twenty-one".