1011213231099 has 8 divisors (see below), whose sum is σ = 1384724424720. Its totient is φ = 655922095776.

The previous prime is 1011213231059. The next prime is 1011213231137. The reversal of 1011213231099 is 9901323121101.

It is a happy number.

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

It is not a de Polignac number, because 1011213231099 - 2⁸ = 1011213230843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011213231059) 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, 4555014444 + ... + 4555014665.

It is an arithmetic number, because the mean of its divisors is an integer number (173090553090).

Almost surely, 2^{1011213231099} is an apocalyptic number.

1011213231099 is a deficient number, since it is larger than the sum of its proper divisors (373511193621).

1011213231099 is an equidigital number, since it uses as much as digits as its factorization.

1011213231099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9110029149.

The product of its (nonzero) digits is 2916, while the sum is 33.

The spelling of 1011213231099 in words is "one trillion, eleven billion, two hundred thirteen million, two hundred thirty-one thousand, ninety-nine".