10021011109 has 2 divisors, whose sum is σ = 10021011110. Its totient is φ = 10021011108.

The previous prime is 10021011101. The next prime is 10021011127. The reversal of 10021011109 is 90111012001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8212890625 + 1808120484 = 90625^2 + 42522^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021011109 - 2³ = 10021011101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021011092 and 10021011101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021011101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010505554 + 5010505555.

It is an arithmetic number, because the mean of its divisors is an integer number (5010505555).

Almost surely, 2^10021011109 is an apocalyptic number.

It is an amenable number.

10021011109 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021011109 is an equidigital number, since it uses as much as digits as its factorization.

10021011109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

The spelling of 10021011109 in words is "ten billion, twenty-one million, eleven thousand, one hundred nine".