1021311540552 has 64 divisors (see below), whose sum is σ = 2582584560000. Its totient is φ = 336531582464.

The previous prime is 1021311540527. The next prime is 1021311540629. The reversal of 1021311540552 is 2550451131201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9234493 + ... + 9344435.

It is an arithmetic number, because the mean of its divisors is an integer number (40352883750).

Almost surely, 2^{1021311540552} is an apocalyptic number.

1021311540552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021311540552 is an abundant number, since it is smaller than the sum of its proper divisors (1561273019448).

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

1021311540552 is a wasteful number, since it uses less digits than its factorization.

1021311540552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114390 (or 114386 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 1021311540552 its reverse (2550451131201), we get a palindrome (3571762671753).

The spelling of 1021311540552 in words is "one trillion, twenty-one billion, three hundred eleven million, five hundred forty thousand, five hundred fifty-two".