1121201040 has 40 divisors (see below), whose sum is σ = 3475723968. Its totient is φ = 298986880.

The previous prime is 1121201023. The next prime is 1121201057. The reversal of 1121201040 is 401021211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1121201023) and next prime (1121201057).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2335596 + ... + 2336075.

Almost surely, 2^1121201040 is an apocalyptic number.

1121201040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121201040 is an abundant number, since it is smaller than the sum of its proper divisors (2354522928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121201040 is a wasteful number, since it uses less digits than its factorization.

1121201040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671687 (or 4671681 counting only the distinct ones).

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

The square root of 1121201040 is about 33484.3402204672. The cubic root of 1121201040 is about 1038.8699016339.

Adding to 1121201040 its reverse (401021211), we get a palindrome (1522222251).

The spelling of 1121201040 in words is "one billion, one hundred twenty-one million, two hundred one thousand, forty".