1121620441 has 16 divisors (see below), whose sum is σ = 1211925888. Its totient is φ = 1034208000.

The previous prime is 1121620429. The next prime is 1121620447. The reversal of 1121620441 is 1440261211.

It is a cyclic number.

It is not a de Polignac number, because 1121620441 - 2¹³ = 1121612249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121620447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193891 + ... + 199591.

It is an arithmetic number, because the mean of its divisors is an integer number (75745368).

Almost surely, 2^1121620441 is an apocalyptic number.

It is an amenable number.

1121620441 is a deficient number, since it is larger than the sum of its proper divisors (90305447).

1121620441 is a wasteful number, since it uses less digits than its factorization.

1121620441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1121620441 is about 33490.6022788483. The cubic root of 1121620441 is about 1038.9994201129. Note that the first 3 decimals are identical.

Adding to 1121620441 its reverse (1440261211), we get a palindrome (2561881652).

The spelling of 1121620441 in words is "one billion, one hundred twenty-one million, six hundred twenty thousand, four hundred forty-one".