222878635228 has 6 divisors (see below), whose sum is σ = 390037611656. Its totient is φ = 111439317612.

The previous prime is 222878635211. The next prime is 222878635229. The reversal of 222878635228 is 822536878222.

It is a happy number.

222878635228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×222878635228² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222878635229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27859829400 + ... + 27859829407.

Almost surely, 2^222878635228 is an apocalyptic number.

It is an amenable number.

222878635228 is a deficient number, since it is larger than the sum of its proper divisors (167158976428).

222878635228 is a wasteful number, since it uses less digits than its factorization.

222878635228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55719658811 (or 55719658809 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 55.

The spelling of 222878635228 in words is "two hundred twenty-two billion, eight hundred seventy-eight million, six hundred thirty-five thousand, two hundred twenty-eight".