1021120202001 has 8 divisors (see below), whose sum is σ = 1365533644384. Its totient is φ = 678726780480.

The previous prime is 1021120201993. The next prime is 1021120202027. The reversal of 1021120202001 is 1002020211201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021120202001 - 2³ = 1021120201993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021120202041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505004035 + ... + 505006056.

It is an arithmetic number, because the mean of its divisors is an integer number (170691705548).

Almost surely, 2^{1021120202001} is an apocalyptic number.

It is an amenable number.

1021120202001 is a deficient number, since it is larger than the sum of its proper divisors (344413442383).

1021120202001 is a wasteful number, since it uses less digits than its factorization.

1021120202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010010431.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1021120202001 its reverse (1002020211201), we get a palindrome (2023140413202).

The spelling of 1021120202001 in words is "one trillion, twenty-one billion, one hundred twenty million, two hundred two thousand, one".