1021155053552 has 20 divisors (see below), whose sum is σ = 1985479048440. Its totient is φ = 508773363648.

The previous prime is 1021155053539. The next prime is 1021155053591. The reversal of 1021155053552 is 2553505511201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112755527 + ... + 112764582.

It is an arithmetic number, because the mean of its divisors is an integer number (99273952422).

Almost surely, 2^{1021155053552} is an apocalyptic number.

It is an amenable number.

1021155053552 is a deficient number, since it is larger than the sum of its proper divisors (964323994888).

1021155053552 is a wasteful number, since it uses less digits than its factorization.

1021155053552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225520400 (or 225520394 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 35.

The spelling of 1021155053552 in words is "one trillion, twenty-one billion, one hundred fifty-five million, fifty-three thousand, five hundred fifty-two".