1211000102019 has 12 divisors (see below), whose sum is σ = 1796498650336. Its totient is φ = 785513579472.

The previous prime is 1211000102017. The next prime is 1211000102071. The reversal of 1211000102019 is 9102010001121.

It is a happy number.

It is not a de Polignac number, because 1211000102019 - 2¹ = 1211000102017 is a prime.

It is a super-2 number, since 2×1211000102019² (a number of 25 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 = 1211000101992 and 1211000102010.

It is not an unprimeable number, because it can be changed into a prime (1211000102017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1818318139 + ... + 1818318804.

Almost surely, 2^{1211000102019} is an apocalyptic number.

1211000102019 is a deficient number, since it is larger than the sum of its proper divisors (585498548317).

1211000102019 is a wasteful number, since it uses less digits than its factorization.

1211000102019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636636986 (or 3636636983 counting only the distinct ones).

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

The spelling of 1211000102019 in words is "one trillion, two hundred eleven billion, one hundred two thousand, nineteen".