1011211999999 has 8 divisors (see below), whose sum is σ = 1022186003072. Its totient is φ = 1000260235800.

The previous prime is 1011211999981. The next prime is 1011212000017. The reversal of 1011211999999 is 9999991121101.

It is an interprime number because it is at equal distance from previous prime (1011211999981) and next prime (1011212000017).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011211999999 - 2²³ = 1011203611391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011211999909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5468277 + ... + 5650174.

It is an arithmetic number, because the mean of its divisors is an integer number (127773250384).

Almost surely, 2^{1011211999999} is an apocalyptic number.

1011211999999 is a deficient number, since it is larger than the sum of its proper divisors (10974003073).

1011211999999 is a wasteful number, since it uses less digits than its factorization.

1011211999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11119437.

The product of its (nonzero) digits is 1062882, while the sum is 61.

The spelling of 1011211999999 in words is "one trillion, eleven billion, two hundred eleven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".