10121102020009 has 2 divisors, whose sum is σ = 10121102020010. Its totient is φ = 10121102020008.

The previous prime is 10121102019961. The next prime is 10121102020027. The reversal of 10121102020009 is 90002020112101.

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., 8407987520409 + 1713114499600 = 2899653^2 + 1308860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121102020009 is a prime.

It is not a weakly prime, because it can be changed into another prime (10121102020049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060551010004 + 5060551010005.

It is an arithmetic number, because the mean of its divisors is an integer number (5060551010005).

Almost surely, 2^{10121102020009} is an apocalyptic number.

It is an amenable number.

10121102020009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121102020009 is an equidigital number, since it uses as much as digits as its factorization.

10121102020009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 10121102020009 in words is "ten trillion, one hundred twenty-one billion, one hundred two million, twenty thousand, nine".