1221536114 has 16 divisors (see below), whose sum is σ = 1871703936. Its totient is φ = 597760800.

The previous prime is 1221536111. The next prime is 1221536123. The reversal of 1221536114 is 4116351221.

It is not an unprimeable number, because it can be changed into a prime (1221536111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11942 + ... + 50849.

It is an arithmetic number, because the mean of its divisors is an integer number (116981496).

Almost surely, 2^1221536114 is an apocalyptic number.

1221536114 is a deficient number, since it is larger than the sum of its proper divisors (650167822).

1221536114 is a wasteful number, since it uses less digits than its factorization.

1221536114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63001.

The product of its digits is 1440, while the sum is 26.

The square root of 1221536114 is about 34950.4808836731. The cubic root of 1221536114 is about 1068.9780074891.

Adding to 1221536114 its reverse (4116351221), we get a palindrome (5337887335).

The spelling of 1221536114 in words is "one billion, two hundred twenty-one million, five hundred thirty-six thousand, one hundred fourteen".