1210221441 has 48 divisors (see below), whose sum is σ = 2072790720. Its totient is φ = 670757760.

The previous prime is 1210221427. The next prime is 1210221499. The reversal of 1210221441 is 1441220121.

1210221441 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 221 + 441 = 666.

It is not a de Polignac number, because 1210221441 - 2⁹ = 1210220929 is a prime.

It is a super-2 number, since 2×1210221441² = 2929271872512232962, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1210221241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135970 + ... + 144596.

It is an arithmetic number, because the mean of its divisors is an integer number (43183140).

Almost surely, 2^1210221441 is an apocalyptic number.

1210221441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210221441 is a deficient number, since it is larger than the sum of its proper divisors (862569279).

1210221441 is a wasteful number, since it uses less digits than its factorization.

1210221441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8766 (or 8763 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1210221441 is about 34788.2371068153. The cubic root of 1210221441 is about 1065.6672377671.

Adding to 1210221441 its reverse (1441220121), we get a palindrome (2651441562).

The spelling of 1210221441 in words is "one billion, two hundred ten million, two hundred twenty-one thousand, four hundred forty-one".