1021302130121 has 32 divisors (see below), whose sum is σ = 1267265126400. Its totient is φ = 801467369280.

The previous prime is 1021302130073. The next prime is 1021302130151. The reversal of 1021302130121 is 1210312031201.

It is a cyclic number.

It is not a de Polignac number, because 1021302130121 - 2¹⁸ = 1021301867977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021302130121.

It is not an unprimeable number, because it can be changed into a prime (1021302130151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13103456 + ... + 13181166.

It is an arithmetic number, because the mean of its divisors is an integer number (39602035200).

Almost surely, 2^{1021302130121} is an apocalyptic number.

It is an amenable number.

1021302130121 is a deficient number, since it is larger than the sum of its proper divisors (245962996279).

1021302130121 is a wasteful number, since it uses less digits than its factorization.

1021302130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78909.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1021302130121 its reverse (1210312031201), we get a palindrome (2231614161322).

The spelling of 1021302130121 in words is "one trillion, twenty-one billion, three hundred two million, one hundred thirty thousand, one hundred twenty-one".