20120201999 has 2 divisors, whose sum is σ = 20120202000. Its totient is φ = 20120201998.

The previous prime is 20120201989. The next prime is 20120202031. The reversal of 20120201999 is 99910202102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120201999 is a prime.

It is a super-3 number, since 3×20120201999³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120201989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060100999 + 10060101000.

It is an arithmetic number, because the mean of its divisors is an integer number (10060101000).

Almost surely, 2^20120201999 is an apocalyptic number.

20120201999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120201999 is an equidigital number, since it uses as much as digits as its factorization.

20120201999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 20120201999 in words is "twenty billion, one hundred twenty million, two hundred one thousand, nine hundred ninety-nine".