20100123007 has 2 divisors, whose sum is σ = 20100123008. Its totient is φ = 20100123006.

The previous prime is 20100122983. The next prime is 20100123059. The reversal of 20100123007 is 70032100102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20100123007 - 2¹¹ = 20100120959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100123067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050061503 + 10050061504.

It is an arithmetic number, because the mean of its divisors is an integer number (10050061504).

Almost surely, 2^20100123007 is an apocalyptic number.

20100123007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100123007 is an equidigital number, since it uses as much as digits as its factorization.

20100123007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

Adding to 20100123007 its reverse (70032100102), we get a palindrome (90132223109).

The spelling of 20100123007 in words is "twenty billion, one hundred million, one hundred twenty-three thousand, seven".