1107172121 has 32 divisors (see below), whose sum is σ = 1275264000. Its totient is φ = 952015680.

The previous prime is 1107172057. The next prime is 1107172151. The reversal of 1107172121 is 1212717011.

It is not a de Polignac number, because 1107172121 - 2⁶ = 1107172057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1107172151) 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, 5563580 + ... + 5563778.

It is an arithmetic number, because the mean of its divisors is an integer number (39852000).

Almost surely, 2^1107172121 is an apocalyptic number.

1107172121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1107172121 is a deficient number, since it is larger than the sum of its proper divisors (168091879).

1107172121 is a wasteful number, since it uses less digits than its factorization.

1107172121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 196, while the sum is 23.

The square root of 1107172121 is about 33274.1960233452. The cubic root of 1107172121 is about 1034.5187836633.

Adding to 1107172121 its reverse (1212717011), we get a palindrome (2319889132).

The spelling of 1107172121 in words is "one billion, one hundred seven million, one hundred seventy-two thousand, one hundred twenty-one".