222355661420 has 24 divisors (see below), whose sum is σ = 466956274848. Its totient is φ = 88940476800.

The previous prime is 222355661389. The next prime is 222355661443. The reversal of 222355661420 is 24166553222.

222355661420 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1420865 + ... + 1569575.

It is an arithmetic number, because the mean of its divisors is an integer number (19456511452).

Almost surely, 2^222355661420 is an apocalyptic number.

222355661420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222355661420 is an abundant number, since it is smaller than the sum of its proper divisors (244600613428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222355661420 is a wasteful number, since it uses less digits than its factorization.

222355661420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223481 (or 223479 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 222355661420 in words is "two hundred twenty-two billion, three hundred fifty-five million, six hundred sixty-one thousand, four hundred twenty".