1101121231 has 8 divisors (see below), whose sum is σ = 1324657280. Its totient is φ = 894143448.

The previous prime is 1101121223. The next prime is 1101121247. The reversal of 1101121231 is 1321211011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1101121231 - 2³ = 1101121223 is a prime.

It is a super-2 number, since 2×1101121231² = 2424935930717910722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101121211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4139421 + ... + 4139686.

It is an arithmetic number, because the mean of its divisors is an integer number (165582160).

Almost surely, 2^1101121231 is an apocalyptic number.

1101121231 is a deficient number, since it is larger than the sum of its proper divisors (223536049).

1101121231 is an equidigital number, since it uses as much as digits as its factorization.

1101121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279133.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1101121231 is about 33183.1467917074. The cubic root of 1101121231 is about 1032.6307310424.

Adding to 1101121231 its reverse (1321211011), we get a palindrome (2422332242).

The spelling of 1101121231 in words is "one billion, one hundred one million, one hundred twenty-one thousand, two hundred thirty-one".