1141221016 has 128 divisors (see below), whose sum is σ = 2620900800. Its totient is φ = 460062720.

The previous prime is 1141220981. The next prime is 1141221043. The reversal of 1141221016 is 6101221411.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1141220984 and 1141221002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1780056 + ... + 1780696.

Almost surely, 2^1141221016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1141221016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310450400).

1141221016 is an abundant number, since it is smaller than the sum of its proper divisors (1479679784).

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

1141221016 is a wasteful number, since it uses less digits than its factorization.

1141221016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1141221016 is about 33781.9628796197. The cubic root of 1141221016 is about 1045.0167548423.

Adding to 1141221016 its reverse (6101221411), we get a palindrome (7242442427).

The spelling of 1141221016 in words is "one billion, one hundred forty-one million, two hundred twenty-one thousand, sixteen".