1020310502121 has 6 divisors (see below), whose sum is σ = 1473781836410. Its totient is φ = 680207001408.

The previous prime is 1020310502051. The next prime is 1020310502177. The reversal of 1020310502121 is 1212050130201.

1020310502121 is a `hidden beast` number, since 10 + 2 + 0 + 31 + 0 + 502 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 623051320896 + 397259181225 = 789336^2 + 630285^2 .

It is not a de Polignac number, because 1020310502121 - 2¹⁰ = 1020310501097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020310502094 and 1020310502103.

It is not an unprimeable number, because it can be changed into a prime (1020310502191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56683916776 + ... + 56683916793.

Almost surely, 2^{1020310502121} is an apocalyptic number.

It is an amenable number.

1020310502121 is a deficient number, since it is larger than the sum of its proper divisors (453471334289).

1020310502121 is a wasteful number, since it uses less digits than its factorization.

1020310502121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113367833575 (or 113367833572 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 1020310502121 its reverse (1212050130201), we get a palindrome (2232360632322).

The spelling of 1020310502121 in words is "one trillion, twenty billion, three hundred ten million, five hundred two thousand, one hundred twenty-one".