1011213099 has 16 divisors (see below), whose sum is σ = 1613332000. Its totient is φ = 622284768.

The previous prime is 1011213097. The next prime is 1011213107. The reversal of 1011213099 is 9903121101.

It is not a de Polignac number, because 1011213099 - 2¹ = 1011213097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011213097) 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, 1440124 + ... + 1440825.

It is an arithmetic number, because the mean of its divisors is an integer number (100833250).

Almost surely, 2^1011213099 is an apocalyptic number.

1011213099 is a deficient number, since it is larger than the sum of its proper divisors (602118901).

1011213099 is a wasteful number, since it uses less digits than its factorization.

1011213099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880971 (or 2880965 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 1011213099 is about 31799.5770254889. The cubic root of 1011213099 is about 1003.7238156512.

The spelling of 1011213099 in words is "one billion, eleven million, two hundred thirteen thousand, ninety-nine".