1214020561 has 16 divisors (see below), whose sum is σ = 1385496000. Its totient is φ = 1054496448.

The previous prime is 1214020553. The next prime is 1214020567. The reversal of 1214020561 is 1650204121.

It is a cyclic number.

It is not a de Polignac number, because 1214020561 - 2³ = 1214020553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214020567) 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, 20310 + ... + 53296.

It is an arithmetic number, because the mean of its divisors is an integer number (86593500).

Almost surely, 2^1214020561 is an apocalyptic number.

It is an amenable number.

1214020561 is a deficient number, since it is larger than the sum of its proper divisors (171475439).

1214020561 is a wasteful number, since it uses less digits than its factorization.

1214020561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33168.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1214020561 is about 34842.7978354207. The cubic root of 1214020561 is about 1066.7811850463.

Adding to 1214020561 its reverse (1650204121), we get a palindrome (2864224682).

The spelling of 1214020561 in words is "one billion, two hundred fourteen million, twenty thousand, five hundred sixty-one".