1002121125056 has 28 divisors (see below), whose sum is σ = 2057155977120. Its totient is φ = 483782611200.

The previous prime is 1002121125013. The next prime is 1002121125059. The reversal of 1002121125056 is 6505211212001.

It is not an unprimeable number, because it can be changed into a prime (1002121125059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269966120 + ... + 269969831.

Almost surely, 2^{1002121125056} is an apocalyptic number.

1002121125056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1002121125056 is an abundant number, since it is smaller than the sum of its proper divisors (1055034852064).

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

1002121125056 is an equidigital number, since it uses as much as digits as its factorization.

1002121125056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539935992 (or 539935982 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 1002121125056 its reverse (6505211212001), we get a palindrome (7507332337057).

The spelling of 1002121125056 in words is "one trillion, two billion, one hundred twenty-one million, one hundred twenty-five thousand, fifty-six".