1021101020999 has 4 divisors (see below), whose sum is σ = 1031210932200. Its totient is φ = 1010991109800.

The previous prime is 1021101020983. The next prime is 1021101021001. The reversal of 1021101020999 is 9990201011201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021101020999 - 2⁴ = 1021101020983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021101020969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5054955449 + ... + 5054955650.

It is an arithmetic number, because the mean of its divisors is an integer number (257802733050).

Almost surely, 2^{1021101020999} is an apocalyptic number.

1021101020999 is a deficient number, since it is larger than the sum of its proper divisors (10109911201).

1021101020999 is a wasteful number, since it uses less digits than its factorization.

1021101020999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10109911200.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 1021101020999 in words is "one trillion, twenty-one billion, one hundred one million, twenty thousand, nine hundred ninety-nine".