201211001019 has 16 divisors (see below), whose sum is σ = 340674711040. Its totient is φ = 114977714760.

The previous prime is 201211000987. The next prime is 201211001021. The reversal of 201211001019 is 910100112102.

It is a happy number.

It is not a de Polignac number, because 201211001019 - 2⁵ = 201211000987 is a prime.

It is a super-2 number, since 2×201211001019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201211000992 and 201211001010.

It is not an unprimeable number, because it can be changed into a prime (201211011019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532304047 + ... + 532304424.

It is an arithmetic number, because the mean of its divisors is an integer number (21292169440).

Almost surely, 2^201211001019 is an apocalyptic number.

201211001019 is a deficient number, since it is larger than the sum of its proper divisors (139463710021).

201211001019 is a wasteful number, since it uses less digits than its factorization.

201211001019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064608487 (or 1064608481 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 201211001019 in words is "two hundred one billion, two hundred eleven million, one thousand, nineteen".