1011113203021 has 4 divisors (see below), whose sum is σ = 1020562859232. Its totient is φ = 1001663546812.

The previous prime is 1011113203003. The next prime is 1011113203043. The reversal of 1011113203021 is 1203023111101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011113203021 - 2¹³ = 1011113194829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011113202986 and 1011113203004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011113203081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4724827945 + ... + 4724828158.

It is an arithmetic number, because the mean of its divisors is an integer number (255140714808).

Almost surely, 2^{1011113203021} is an apocalyptic number.

It is an amenable number.

1011113203021 is a deficient number, since it is larger than the sum of its proper divisors (9449656211).

1011113203021 is an equidigital number, since it uses as much as digits as its factorization.

1011113203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449656210.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1011113203021 its reverse (1203023111101), we get a palindrome (2214136314122).

The spelling of 1011113203021 in words is "one trillion, eleven billion, one hundred thirteen million, two hundred three thousand, twenty-one".