1111211020003 has 4 divisors (see below), whose sum is σ = 1269955451440. Its totient is φ = 952466588568.

The previous prime is 1111211019959. The next prime is 1111211020009. The reversal of 1111211020003 is 3000201121111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111211020003 - 2⁹ = 1111211019491 is a prime.

It is a super-2 number, since 2×1111211020003² (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 (1111211020009) 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, 79372215708 + ... + 79372215721.

It is an arithmetic number, because the mean of its divisors is an integer number (317488862860).

Almost surely, 2^{1111211020003} is an apocalyptic number.

1111211020003 is a deficient number, since it is larger than the sum of its proper divisors (158744431437).

1111211020003 is an equidigital number, since it uses as much as digits as its factorization.

1111211020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158744431436.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1111211020003 its reverse (3000201121111), we get a palindrome (4111412141114).

The spelling of 1111211020003 in words is "one trillion, one hundred eleven billion, two hundred eleven million, twenty thousand, three".