1222201531 has 8 divisors (see below), whose sum is σ = 1275724800. Its totient is φ = 1168710312.

The previous prime is 1222201517. The next prime is 1222201537. The reversal of 1222201531 is 1351022221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222201531 - 2⁷ = 1222201403 is a prime.

It is a super-2 number, since 2×1222201531² = 2987553164757487922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222201499 and 1222201508.

It is not an unprimeable number, because it can be changed into a prime (1222201537) 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, 102520 + ... + 113818.

It is an arithmetic number, because the mean of its divisors is an integer number (159465600).

Almost surely, 2^1222201531 is an apocalyptic number.

1222201531 is a deficient number, since it is larger than the sum of its proper divisors (53523269).

1222201531 is a wasteful number, since it uses less digits than its factorization.

1222201531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16025.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1222201531 is about 34959.9990131579. Note that the first 3 decimals coincide. The cubic root of 1222201531 is about 1069.1720765277.

Adding to 1222201531 its reverse (1351022221), we get a palindrome (2573223752).

The spelling of 1222201531 in words is "one billion, two hundred twenty-two million, two hundred one thousand, five hundred thirty-one".