1011021312987 has 96 divisors (see below), whose sum is σ = 1721090309120. Its totient is φ = 559824410880.

The previous prime is 1011021312949. The next prime is 1011021313019. The reversal of 1011021312987 is 7892131201101.

It is not a de Polignac number, because 1011021312987 - 2⁶ = 1011021312923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011021312887) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 945763089 + ... + 945764157.

Almost surely, 2^{1011021312987} is an apocalyptic number.

1011021312987 is a deficient number, since it is larger than the sum of its proper divisors (710068996133).

1011021312987 is a wasteful number, since it uses less digits than its factorization.

1011021312987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 36.

The spelling of 1011021312987 in words is "one trillion, eleven billion, twenty-one million, three hundred twelve thousand, nine hundred eighty-seven".