120019999057531 has 2 divisors, whose sum is σ = 120019999057532. Its totient is φ = 120019999057530.

The previous prime is 120019999057489. The next prime is 120019999057579. The reversal of 120019999057531 is 135750999910021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120019999057531 - 2⁷ = 120019999057403 is a prime.

It is a super-3 number, since 3×120019999057531³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 120019999057531.

It is not a weakly prime, because it can be changed into another prime (120019999054531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60009999528765 + 60009999528766.

It is an arithmetic number, because the mean of its divisors is an integer number (60009999528766).

Almost surely, 2^{120019999057531} is an apocalyptic number.

120019999057531 is a deficient number, since it is larger than the sum of its proper divisors (1).

120019999057531 is an equidigital number, since it uses as much as digits as its factorization.

120019999057531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6889050, while the sum is 61.

The spelling of 120019999057531 in words is "one hundred twenty trillion, nineteen billion, nine hundred ninety-nine million, fifty-seven thousand, five hundred thirty-one".