1020200001121 has 8 divisors (see below), whose sum is σ = 1165953287744. Its totient is φ = 874449321840.

The previous prime is 1020200001097. The next prime is 1020200001203. The reversal of 1020200001121 is 1211000020201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020200001121 - 2⁵ = 1020200001089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020200001098 and 1020200001107.

It is not an unprimeable number, because it can be changed into a prime (1020200001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274366 + ... + 1454536.

It is an arithmetic number, because the mean of its divisors is an integer number (145744160968).

Almost surely, 2^{1020200001121} is an apocalyptic number.

It is an amenable number.

1020200001121 is a deficient number, since it is larger than the sum of its proper divisors (145753286623).

1020200001121 is a wasteful number, since it uses less digits than its factorization.

1020200001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303671.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1020200001121 its reverse (1211000020201), we get a palindrome (2231200021322).

The spelling of 1020200001121 in words is "one trillion, twenty billion, two hundred million, one thousand, one hundred twenty-one".