610012121 has 2 divisors, whose sum is σ = 610012122. Its totient is φ = 610012120.

The previous prime is 610012103. The next prime is 610012213. The reversal of 610012121 is 121210016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508728025 + 101284096 = 22555^2 + 10064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-610012121 is a prime.

It is a super-2 number, since 2×610012121² = 744229575533837282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 610012096 and 610012105.

It is not a weakly prime, because it can be changed into another prime (610012321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305006060 + 305006061.

It is an arithmetic number, because the mean of its divisors is an integer number (305006061).

Almost surely, 2^610012121 is an apocalyptic number.

It is an amenable number.

610012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

610012121 is an equidigital number, since it uses as much as digits as its factorization.

610012121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 610012121 is about 24698.4234517104. The cubic root of 610012121 is about 848.0982261507.

Adding to 610012121 its reverse (121210016), we get a palindrome (731222137).

The spelling of 610012121 in words is "six hundred ten million, twelve thousand, one hundred twenty-one".