1081211788699 has 16 divisors (see below), whose sum is σ = 1237973809600. Its totient is φ = 925025992704.

The previous prime is 1081211788697. The next prime is 1081211788739. The reversal of 1081211788699 is 9968871121801.

It is a cyclic number.

It is not a de Polignac number, because 1081211788699 - 2¹ = 1081211788697 is a prime.

It is a super-2 number, since 2×1081211788699² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081211788693) 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, 45746017 + ... + 45769645.

It is an arithmetic number, because the mean of its divisors is an integer number (77373363100).

Almost surely, 2^{1081211788699} is an apocalyptic number.

1081211788699 is a deficient number, since it is larger than the sum of its proper divisors (156762020901).

1081211788699 is a wasteful number, since it uses less digits than its factorization.

1081211788699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35542.

The product of its (nonzero) digits is 3483648, while the sum is 61.

The spelling of 1081211788699 in words is "one trillion, eighty-one billion, two hundred eleven million, seven hundred eighty-eight thousand, six hundred ninety-nine".