61030003121 has 2 divisors, whose sum is σ = 61030003122. Its totient is φ = 61030003120.

The previous prime is 61030003103. The next prime is 61030003159. The reversal of 61030003121 is 12130003016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50495033521 + 10534969600 = 224711^2 + 102640^2 .

It is a cyclic number.

It is not a de Polignac number, because 61030003121 - 2⁶ = 61030003057 is a prime.

It is a super-2 number, since 2×61030003121² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61030003121.

It is not a weakly prime, because it can be changed into another prime (61030005121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30515001560 + 30515001561.

It is an arithmetic number, because the mean of its divisors is an integer number (30515001561).

Almost surely, 2^61030003121 is an apocalyptic number.

It is an amenable number.

61030003121 is a deficient number, since it is larger than the sum of its proper divisors (1).

61030003121 is an equidigital number, since it uses as much as digits as its factorization.

61030003121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 61030003121 its reverse (12130003016), we get a palindrome (73160006137).

The spelling of 61030003121 in words is "sixty-one billion, thirty million, three thousand, one hundred twenty-one".