100020122012009 has 2 divisors, whose sum is σ = 100020122012010. Its totient is φ = 100020122012008.

The previous prime is 100020122011987. The next prime is 100020122012029. The reversal of 100020122012009 is 900210221020001.

It is a happy number.

It is an a-pointer prime, because the next prime (100020122012029) can be obtained adding 100020122012009 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76274022250000 + 23746099762009 = 8733500^2 + 4872997^2 .

It is a cyclic number.

It is not a de Polignac number, because 100020122012009 - 2²⁴ = 100020105234793 is a prime.

It is not a weakly prime, because it can be changed into another prime (100020122012029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010061006004 + 50010061006005.

It is an arithmetic number, because the mean of its divisors is an integer number (50010061006005).

Almost surely, 2^{100020122012009} is an apocalyptic number.

It is an amenable number.

100020122012009 is a deficient number, since it is larger than the sum of its proper divisors (1).

100020122012009 is an equidigital number, since it uses as much as digits as its factorization.

100020122012009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 100020122012009 in words is "one hundred trillion, twenty billion, one hundred twenty-two million, twelve thousand, nine".