1000222121056 has 12 divisors (see below), whose sum is σ = 1969187300892. Its totient is φ = 500111060512.

The previous prime is 1000222121039. The next prime is 1000222121057. The reversal of 1000222121056 is 6501212220001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222121057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15628470610 + ... + 15628470673.

It is an arithmetic number, because the mean of its divisors is an integer number (164098941741).

Almost surely, 2^{1000222121056} is an apocalyptic number.

1000222121056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1000222121056 is a deficient number, since it is larger than the sum of its proper divisors (968965179836).

1000222121056 is an equidigital number, since it uses as much as digits as its factorization.

1000222121056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31256941293 (or 31256941285 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 1000222121056 its reverse (6501212220001), we get a palindrome (7501434341057).

The spelling of 1000222121056 in words is "one trillion, two hundred twenty-two million, one hundred twenty-one thousand, fifty-six".