20400012119 has 2 divisors, whose sum is σ = 20400012120. Its totient is φ = 20400012118.

The previous prime is 20400012109. The next prime is 20400012151. The reversal of 20400012119 is 91121000402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20400012119 is a prime.

It is a super-2 number, since 2×20400012119² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20400012119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20400012109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200006059 + 10200006060.

It is an arithmetic number, because the mean of its divisors is an integer number (10200006060).

Almost surely, 2^20400012119 is an apocalyptic number.

20400012119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20400012119 is an equidigital number, since it uses as much as digits as its factorization.

20400012119 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 20400012119 in words is "twenty billion, four hundred million, twelve thousand, one hundred nineteen".