1122122001 has 48 divisors (see below), whose sum is σ = 2044744128. Its totient is φ = 538070400.

The previous prime is 1122121997. The next prime is 1122122011. The reversal of 1122122001 is 1002212211.

It is not a de Polignac number, because 1122122001 - 2² = 1122121997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122122011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5670 + ... + 47711.

It is an arithmetic number, because the mean of its divisors is an integer number (42598836).

Almost surely, 2^1122122001 is an apocalyptic number.

1122122001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122122001 is a deficient number, since it is larger than the sum of its proper divisors (922622127).

1122122001 is a wasteful number, since it uses less digits than its factorization.

1122122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53422 (or 53415 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1122122001 is about 33498.0895126871. The cubic root of 1122122001 is about 1039.1542683640.

Adding to 1122122001 its reverse (1002212211), we get a palindrome (2124334212).

The spelling of 1122122001 in words is "one billion, one hundred twenty-two million, one hundred twenty-two thousand, one".