1111011021001 has 16 divisors (see below), whose sum is σ = 1283043883264. Its totient is φ = 942321682944.

The previous prime is 1111011020981. The next prime is 1111011021013. The reversal of 1111011021001 is 1001201101111.

It is a cyclic number.

It is not a de Polignac number, because 1111011021001 - 2⁹ = 1111011020489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111012021001) 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, 341101 + ... + 1529173.

It is an arithmetic number, because the mean of its divisors is an integer number (80190242704).

Almost surely, 2^{1111011021001} is an apocalyptic number.

It is an amenable number.

1111011021001 is a deficient number, since it is larger than the sum of its proper divisors (172032862263).

1111011021001 is a wasteful number, since it uses less digits than its factorization.

1111011021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189480.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1111011021001 its reverse (1001201101111), we get a palindrome (2112212122112).

The spelling of 1111011021001 in words is "one trillion, one hundred eleven billion, eleven million, twenty-one thousand, one".