1011111021213 has 8 divisors (see below), whose sum is σ = 1348168723968. Its totient is φ = 674063666304.

The previous prime is 1011111021187. The next prime is 1011111021257. The reversal of 1011111021213 is 3121201111101.

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

It is not a de Polignac number, because 1011111021213 - 2⁹ = 1011111020701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011111021192 and 1011111021201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011111022213) 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, 2356020 + ... + 2751917.

It is an arithmetic number, because the mean of its divisors is an integer number (168521090496).

Almost surely, 2^{1011111021213} is an apocalyptic number.

It is an amenable number.

1011111021213 is a deficient number, since it is larger than the sum of its proper divisors (337057702755).

1011111021213 is an equidigital number, since it uses as much as digits as its factorization.

1011111021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5173923.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 1011111021213 its reverse (3121201111101), we get a palindrome (4132312132314).

The spelling of 1011111021213 in words is "one trillion, eleven billion, one hundred eleven million, twenty-one thousand, two hundred thirteen".