1121013201 has 32 divisors (see below), whose sum is σ = 1973127168. Its totient is φ = 548087040.

The previous prime is 1121013191. The next prime is 1121013203. The reversal of 1121013201 is 1023101211.

It is not a de Polignac number, because 1121013201 - 2⁶ = 1121013137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121013203) 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, 138805 + ... + 146658.

It is an arithmetic number, because the mean of its divisors is an integer number (61660224).

Almost surely, 2^1121013201 is an apocalyptic number.

1121013201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121013201 is a deficient number, since it is larger than the sum of its proper divisors (852113967).

1121013201 is a wasteful number, since it uses less digits than its factorization.

1121013201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285501.

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

The square root of 1121013201 is about 33481.5352246578. The cubic root of 1121013201 is about 1038.8118831415.

Adding to 1121013201 its reverse (1023101211), we get a palindrome (2144114412).

The spelling of 1121013201 in words is "one billion, one hundred twenty-one million, thirteen thousand, two hundred one".