1100000121 has 32 divisors (see below), whose sum is σ = 1653623808. Its totient is φ = 644552640.

The previous prime is 1100000081. The next prime is 1100000123. The reversal of 1100000121 is 1210000011.

It is not a de Polignac number, because 1100000121 - 2¹⁷ = 1099869049 is a prime.

1100000121 is a modest number, since divided by 121 gives 11 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1100000123) 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, 196260 + ... + 201786.

It is an arithmetic number, because the mean of its divisors is an integer number (51675744).

Almost surely, 2^1100000121 is an apocalyptic number.

1100000121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100000121 is a deficient number, since it is larger than the sum of its proper divisors (553623687).

1100000121 is a wasteful number, since it uses less digits than its factorization.

1100000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5741.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1100000121 is about 33166.2497276976. The cubic root of 1100000121 is about 1032.2801533066.

Adding to 1100000121 its reverse (1210000011), we get a palindrome (2310000132).

The spelling of 1100000121 in words is "one billion, one hundred million, one hundred twenty-one", and thus it is an aban number.