202021224455 has 16 divisors (see below), whose sum is σ = 242869017600. Its totient is φ = 161321438880.

The previous prime is 202021224397. The next prime is 202021224487. The reversal of 202021224455 is 554422120202.

It is a happy number.

It is not a de Polignac number, because 202021224455 - 2³² = 197726257159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13432790 + ... + 13447820.

It is an arithmetic number, because the mean of its divisors is an integer number (15179313600).

Almost surely, 2^202021224455 is an apocalyptic number.

202021224455 is a deficient number, since it is larger than the sum of its proper divisors (40847793145).

202021224455 is a wasteful number, since it uses less digits than its factorization.

202021224455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19774.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 202021224455 its reverse (554422120202), we get a palindrome (756443344657).

The spelling of 202021224455 in words is "two hundred two billion, twenty-one million, two hundred twenty-four thousand, four hundred fifty-five".