1220523440242 has 16 divisors (see below), whose sum is σ = 1834559064000. Its totient is φ = 609003893232.

The previous prime is 1220523440233. The next prime is 1220523440251. The reversal of 1220523440242 is 2420443250221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220523440233) and next prime (1220523440251).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33537568 + ... + 33573940.

It is an arithmetic number, because the mean of its divisors is an integer number (114659941500).

Almost surely, 2^{1220523440242} is an apocalyptic number.

1220523440242 is a deficient number, since it is larger than the sum of its proper divisors (614035623758).

1220523440242 is a wasteful number, since it uses less digits than its factorization.

1220523440242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70497.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 1220523440242 its reverse (2420443250221), we get a palindrome (3640966690463).

The spelling of 1220523440242 in words is "one trillion, two hundred twenty billion, five hundred twenty-three million, four hundred forty thousand, two hundred forty-two".