2120001178499 has 2 divisors, whose sum is σ = 2120001178500. Its totient is φ = 2120001178498.

The previous prime is 2120001178489. The next prime is 2120001178507. The reversal of 2120001178499 is 9948711000212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120001178499 - 2⁴ = 2120001178483 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120001178489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060000589249 + 1060000589250.

It is an arithmetic number, because the mean of its divisors is an integer number (1060000589250).

Almost surely, 2^{2120001178499} is an apocalyptic number.

2120001178499 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120001178499 is an equidigital number, since it uses as much as digits as its factorization.

2120001178499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 2120001178499 in words is "two trillion, one hundred twenty billion, one million, one hundred seventy-eight thousand, four hundred ninety-nine".