1220153244136 has 16 divisors (see below), whose sum is σ = 2287832769540. Its totient is φ = 610064505600.

The previous prime is 1220153244109. The next prime is 1220153244137. The reversal of 1220153244136 is 6314423510221.

It can be written as a sum of positive squares in 2 ways, for example, as 1206935143236 + 13218100900 = 1098606^2 + 114970^2 .

It is not an unprimeable number, because it can be changed into a prime (1220153244137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079215 + ... + 1898686.

Almost surely, 2^{1220153244136} is an apocalyptic number.

It is an amenable number.

1220153244136 is a deficient number, since it is larger than the sum of its proper divisors (1067679525404).

1220153244136 is a wasteful number, since it uses less digits than its factorization.

1220153244136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029124 (or 3029120 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 1220153244136 its reverse (6314423510221), we get a palindrome (7534576754357).

The spelling of 1220153244136 in words is "one trillion, two hundred twenty billion, one hundred fifty-three million, two hundred forty-four thousand, one hundred thirty-six".