1021200130121 has 8 divisors (see below), whose sum is σ = 1053679630080. Its totient is φ = 989168623488.

The previous prime is 1021200130091. The next prime is 1021200130133. The reversal of 1021200130121 is 1210310021201.

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 1021200130121 - 2⁶ = 1021200130057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021200130096 and 1021200130105.

It is not an unprimeable number, because it can be changed into a prime (1021290130121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 111993701 + ... + 112002818.

It is an arithmetic number, because the mean of its divisors is an integer number (131709953760).

Almost surely, 2^{1021200130121} is an apocalyptic number.

It is an amenable number.

1021200130121 is a deficient number, since it is larger than the sum of its proper divisors (32479499959).

1021200130121 is an equidigital number, since it uses as much as digits as its factorization.

1021200130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223996663.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1021200130121 its reverse (1210310021201), we get a palindrome (2231510151322).

The spelling of 1021200130121 in words is "one trillion, twenty-one billion, two hundred million, one hundred thirty thousand, one hundred twenty-one".