2111021011001 has 16 divisors (see below), whose sum is σ = 2462239488000. Its totient is φ = 1809147138624.

The previous prime is 2111021010997. The next prime is 2111021011007. The reversal of 2111021011001 is 1001101201112.

It is not a de Polignac number, because 2111021011001 - 2² = 2111021010997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111021011007) 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, 1578881 + ... + 2591313.

It is an arithmetic number, because the mean of its divisors is an integer number (153889968000).

Almost surely, 2^{2111021011001} is an apocalyptic number.

It is an amenable number.

2111021011001 is a deficient number, since it is larger than the sum of its proper divisors (351218476999).

2111021011001 is an equidigital number, since it uses as much as digits as its factorization.

2111021011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018533 (or 1018519 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2111021011001 its reverse (1001101201112), we get a palindrome (3112122212113).

The spelling of 2111021011001 in words is "two trillion, one hundred eleven billion, twenty-one million, eleven thousand, one".