1101122001 has 24 divisors (see below), whose sum is σ = 1821478464. Its totient is φ = 627913440.

The previous prime is 1101121951. The next prime is 1101122003. The reversal of 1101122001 is 1002211011.

It is a happy number.

It is not a de Polignac number, because 1101122001 - 2¹¹ = 1101119953 is a prime.

It is a super-2 number, since 2×1101122001² = 2424939322172488002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1101122003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13135 + ... + 48731.

It is an arithmetic number, because the mean of its divisors is an integer number (75894936).

Almost surely, 2^1101122001 is an apocalyptic number.

It is an amenable number.

1101122001 is a deficient number, since it is larger than the sum of its proper divisors (720356463).

1101122001 is a wasteful number, since it uses less digits than its factorization.

1101122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36101 (or 36098 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1101122001 is about 33183.1583939805. The cubic root of 1101122001 is about 1032.6309717442.

Adding to 1101122001 its reverse (1002211011), we get a palindrome (2103333012).

The spelling of 1101122001 in words is "one billion, one hundred one million, one hundred twenty-two thousand, one".