222120011121020 has 24 divisors (see below), whose sum is σ = 470980683779424. Its totient is φ = 87985402462656.

The previous prime is 222120011121013. The next prime is 222120011121031. The reversal of 222120011121020 is 20121110021222.

It is a self number, because there is not a number n which added to its sum of digits gives 222120011121020.

It is a congruent number.

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, 53912621999 + ... + 53912626118.

It is an arithmetic number, because the mean of its divisors is an integer number (19624195157476).

Almost surely, 2^{222120011121020} is an apocalyptic number.

222120011121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120011121020 is an abundant number, since it is smaller than the sum of its proper divisors (248860672658404).

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

222120011121020 is a wasteful number, since it uses less digits than its factorization.

222120011121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107825248229 (or 107825248227 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222120011121020 its reverse (20121110021222), we get a palindrome (242241121142242).

The spelling of 222120011121020 in words is "two hundred twenty-two trillion, one hundred twenty billion, eleven million, one hundred twenty-one thousand, twenty".