1030203122121 has 24 divisors (see below), whose sum is σ = 1517314276296. Its totient is φ = 673325203200.

The previous prime is 1030203122111. The next prime is 1030203122141. The reversal of 1030203122121 is 1212213020301.

1030203122121 is a `hidden beast` number, since 10 + 302 + 0 + 312 + 21 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 29563019721 + 1000640102400 = 171939^2 + 1000320^2 .

It is not a de Polignac number, because 1030203122121 - 2⁶ = 1030203122057 is a prime.

It is a super-2 number, since 2×1030203122121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1030203122094 and 1030203122103.

It is not an unprimeable number, because it can be changed into a prime (1030203122111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209460 + ... + 1450613.

It is an arithmetic number, because the mean of its divisors is an integer number (63221428179).

Almost surely, 2^{1030203122121} is an apocalyptic number.

It is an amenable number.

1030203122121 is a deficient number, since it is larger than the sum of its proper divisors (487111154175).

1030203122121 is a wasteful number, since it uses less digits than its factorization.

1030203122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661433 (or 1661430 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1030203122121 its reverse (1212213020301), we get a palindrome (2242416142422).

The spelling of 1030203122121 in words is "one trillion, thirty billion, two hundred three million, one hundred twenty-two thousand, one hundred twenty-one".