1222503540 has 48 divisors (see below), whose sum is σ = 3424606080. Its totient is φ = 325848960.

The previous prime is 1222503533. The next prime is 1222503547. The reversal of 1222503540 is 453052221.

1222503540 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1222503533) and next prime (1222503547).

It is a self number, because there is not a number n which added to its sum of digits gives 1222503540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222503547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193146 + ... + 199374.

It is an arithmetic number, because the mean of its divisors is an integer number (71345960).

Almost surely, 2^1222503540 is an apocalyptic number.

1222503540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222503540 is an abundant number, since it is smaller than the sum of its proper divisors (2202102540).

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

1222503540 is a wasteful number, since it uses less digits than its factorization.

1222503540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9512 (or 9510 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1222503540 is about 34964.3180971687. The cubic root of 1222503540 is about 1069.2601342903.

Adding to 1222503540 its reverse (453052221), we get a palindrome (1675555761).

The spelling of 1222503540 in words is "one billion, two hundred twenty-two million, five hundred three thousand, five hundred forty".