1220153244135 has 48 divisors (see below), whose sum is σ = 2272047702912. Its totient is φ = 557521876800.

The previous prime is 1220153244109. The next prime is 1220153244137. The reversal of 1220153244135 is 5314423510221.

It is not a de Polignac number, because 1220153244135 - 2⁸ = 1220153243879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220153244096 and 1220153244105.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1176780 + ... + 1955790.

It is an arithmetic number, because the mean of its divisors is an integer number (47334327144).

Almost surely, 2^{1220153244135} is an apocalyptic number.

1220153244135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220153244135 is a deficient number, since it is larger than the sum of its proper divisors (1051894458777).

1220153244135 is a wasteful number, since it uses less digits than its factorization.

1220153244135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781164 (or 781157 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 1220153244135 its reverse (5314423510221), we get a palindrome (6534576754356).

The spelling of 1220153244135 in words is "one trillion, two hundred twenty billion, one hundred fifty-three million, two hundred forty-four thousand, one hundred thirty-five".