1020130200121 has 8 divisors (see below), whose sum is σ = 1023050026440. Its totient is φ = 1017213965568.

The previous prime is 1020130200109. The next prime is 1020130200151. The reversal of 1020130200121 is 1210020310201.

It can be written as a sum of positive squares in 4 ways, for example, as 88063530025 + 932066670096 = 296755^2 + 965436^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020130200121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020130200101) 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, 328576 + ... + 1465681.

It is an arithmetic number, because the mean of its divisors is an integer number (127881253305).

Almost surely, 2^{1020130200121} is an apocalyptic number.

It is an amenable number.

1020130200121 is a deficient number, since it is larger than the sum of its proper divisors (2919826319).

1020130200121 is a wasteful number, since it uses less digits than its factorization.

1020130200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795883.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1020130200121 its reverse (1210020310201), we get a palindrome (2230150510322).

The spelling of 1020130200121 in words is "one trillion, twenty billion, one hundred thirty million, two hundred thousand, one hundred twenty-one".