1011201001988 has 12 divisors (see below), whose sum is σ = 1846540960320. Its totient is φ = 483617870472.

The previous prime is 1011201001969. The next prime is 1011201002003. The reversal of 1011201001988 is 8891001021101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5495657528 + ... + 5495657711.

It is an arithmetic number, because the mean of its divisors is an integer number (153878413360).

Almost surely, 2^{1011201001988} is an apocalyptic number.

It is an amenable number.

1011201001988 is a deficient number, since it is larger than the sum of its proper divisors (835339958332).

1011201001988 is a wasteful number, since it uses less digits than its factorization.

1011201001988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10991315266 (or 10991315264 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 32.

The spelling of 1011201001988 in words is "one trillion, eleven billion, two hundred one million, one thousand, nine hundred eighty-eight".