1111021211011 has 16 divisors (see below), whose sum is σ = 1183991032224. Its totient is φ = 1038898957824.

The previous prime is 1111021210973. The next prime is 1111021211021. The reversal of 1111021211011 is 1101121201111.

It is a cyclic number.

It is not a de Polignac number, because 1111021211011 - 2²¹ = 1111019113859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111021210982 and 1111021211000.

It is not an unprimeable number, because it can be changed into a prime (1111021211021) 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, 38774256 + ... + 38802898.

It is an arithmetic number, because the mean of its divisors is an integer number (73999439514).

Almost surely, 2^{1111021211011} is an apocalyptic number.

1111021211011 is a deficient number, since it is larger than the sum of its proper divisors (72969821213).

1111021211011 is a wasteful number, since it uses less digits than its factorization.

1111021211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43350.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1111021211011 its reverse (1101121201111), we get a palindrome (2212142412122).

The spelling of 1111021211011 in words is "one trillion, one hundred eleven billion, twenty-one million, two hundred eleven thousand, eleven".