1021225356552 has 32 divisors (see below), whose sum is σ = 2556758170080. Its totient is φ = 339915815040.

The previous prime is 1021225356533. The next prime is 1021225356553. The reversal of 1021225356552 is 2556535221201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021225356552.

It is not an unprimeable number, because it can be changed into a prime (1021225356553) 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 in 7 ways as a sum of consecutive naturals, for example, 30772893 + ... + 30806060.

It is an arithmetic number, because the mean of its divisors is an integer number (79898692815).

Almost surely, 2^{1021225356552} is an apocalyptic number.

1021225356552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021225356552 is an abundant number, since it is smaller than the sum of its proper divisors (1535532813528).

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

1021225356552 is a wasteful number, since it uses less digits than its factorization.

1021225356552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61579653 (or 61579649 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 1021225356552 in words is "one trillion, twenty-one billion, two hundred twenty-five million, three hundred fifty-six thousand, five hundred fifty-two".