10121403077 has 2 divisors, whose sum is σ = 10121403078. Its totient is φ = 10121403076.

The previous prime is 10121402989. The next prime is 10121403091. The reversal of 10121403077 is 77030412101.

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., 8596812961 + 1524590116 = 92719^2 + 39046^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121403077 - 2⁸ = 10121402821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121453077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060701538 + 5060701539.

It is an arithmetic number, because the mean of its divisors is an integer number (5060701539).

Almost surely, 2^10121403077 is an apocalyptic number.

It is an amenable number.

10121403077 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121403077 is an equidigital number, since it uses as much as digits as its factorization.

10121403077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

Adding to 10121403077 its reverse (77030412101), we get a palindrome (87151815178).

The spelling of 10121403077 in words is "ten billion, one hundred twenty-one million, four hundred three thousand, seventy-seven".