1122111001 has 16 divisors (see below), whose sum is σ = 1258742016. Its totient is φ = 991440000.

The previous prime is 1122110989. The next prime is 1122111013. The reversal of 1122111001 is 1001112211.

It is an interprime number because it is at equal distance from previous prime (1122110989) and next prime (1122111013).

It is a cyclic number.

It is not a de Polignac number, because 1122111001 - 2⁹ = 1122110489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122111701) 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, 117631 + ... + 126811.

It is an arithmetic number, because the mean of its divisors is an integer number (78671376).

Almost surely, 2^1122111001 is an apocalyptic number.

1122111001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122111001 is a deficient number, since it is larger than the sum of its proper divisors (136631015).

1122111001 is a wasteful number, since it uses less digits than its factorization.

1122111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9504.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1122111001 is about 33497.9253238167. The cubic root of 1122111001 is about 1039.1508727931.

Adding to 1122111001 its reverse (1001112211), we get a palindrome (2123223212).

It can be divided in two parts, 112211 and 1001, that multiplied together give a palindrome (112323211).

The spelling of 1122111001 in words is "one billion, one hundred twenty-two million, one hundred eleven thousand, one".