2211011111001 has 32 divisors (see below), whose sum is σ = 3709797055488. Its totient is φ = 1137842821440.

The previous prime is 2211011110939. The next prime is 2211011111011. The reversal of 2211011111001 is 1001111101122.

It is not a de Polignac number, because 2211011111001 - 2²⁷ = 2210876893273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2211011111011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44701810 + ... + 44751243.

It is an arithmetic number, because the mean of its divisors is an integer number (115931157984).

Almost surely, 2^{2211011111001} is an apocalyptic number.

2211011111001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2211011111001 is a deficient number, since it is larger than the sum of its proper divisors (1498785944487).

2211011111001 is a wasteful number, since it uses less digits than its factorization.

2211011111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89453181.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 2211011111001 its reverse (1001111101122), we get a palindrome (3212122212123).

It can be divided in two parts, 22110 and 11111001, that added together give a palindrome (11133111).

The spelling of 2211011111001 in words is "two trillion, two hundred eleven billion, eleven million, one hundred eleven thousand, one".