1222163532 has 24 divisors (see below), whose sum is σ = 3168572400. Its totient is φ = 407387808.

The previous prime is 1222163531. The next prime is 1222163533. The reversal of 1222163532 is 2353612221.

It is a happy number.

1222163532 is a `hidden beast` number, since 1 + 2 + 2 + 21 + 635 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1222163531) and next prime (1222163533).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1222163496 and 1222163505.

It is not an unprimeable number, because it can be changed into a prime (1222163531) 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, 5658057 + ... + 5658272.

It is an arithmetic number, because the mean of its divisors is an integer number (132023850).

Almost surely, 2^1222163532 is an apocalyptic number.

1222163532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222163532 is an abundant number, since it is smaller than the sum of its proper divisors (1946408868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222163532 is a wasteful number, since it uses less digits than its factorization.

1222163532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11316342 (or 11316334 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1222163532 is about 34959.4555449595. The cubic root of 1222163532 is about 1069.1609960063.

Adding to 1222163532 its reverse (2353612221), we get a palindrome (3575775753).

The spelling of 1222163532 in words is "one billion, two hundred twenty-two million, one hundred sixty-three thousand, five hundred thirty-two".