61027002121 has 2 divisors, whose sum is σ = 61027002122. Its totient is φ = 61027002120.

The previous prime is 61027002031. The next prime is 61027002133. The reversal of 61027002121 is 12120072016.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49891476496 + 11135525625 = 223364^2 + 105525^2 .

It is a cyclic number.

It is not a de Polignac number, because 61027002121 - 2⁷ = 61027001993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61027002092 and 61027002101.

It is not a weakly prime, because it can be changed into another prime (61027002161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30513501060 + 30513501061.

It is an arithmetic number, because the mean of its divisors is an integer number (30513501061).

Almost surely, 2^61027002121 is an apocalyptic number.

It is an amenable number.

61027002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

61027002121 is an equidigital number, since it uses as much as digits as its factorization.

61027002121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 61027002121 its reverse (12120072016), we get a palindrome (73147074137).

The spelling of 61027002121 in words is "sixty-one billion, twenty-seven million, two thousand, one hundred twenty-one".