1101216231 has 24 divisors (see below), whose sum is σ = 1690968240. Its totient is φ = 688608000.

The previous prime is 1101216229. The next prime is 1101216247. The reversal of 1101216231 is 1326121011.

1101216231 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1101216231 - 2¹ = 1101216229 is a prime.

It is a super-2 number, since 2×1101216231² = 2425354374835690722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101216211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14610 + ... + 49151.

It is an arithmetic number, because the mean of its divisors is an integer number (70457010).

Almost surely, 2^1101216231 is an apocalyptic number.

1101216231 is a deficient number, since it is larger than the sum of its proper divisors (589752009).

1101216231 is a wasteful number, since it uses less digits than its factorization.

1101216231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63887 (or 63884 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1101216231 is about 33184.5782103675. The cubic root of 1101216231 is about 1032.6604271666.

Adding to 1101216231 its reverse (1326121011), we get a palindrome (2427337242).

The spelling of 1101216231 in words is "one billion, one hundred one million, two hundred sixteen thousand, two hundred thirty-one".