1220512514145 has 16 divisors (see below), whose sum is σ = 1954298343552. Its totient is φ = 650447233920.

The previous prime is 1220512514099. The next prime is 1220512514161. The reversal of 1220512514145 is 5414152150221.

It is not a de Polignac number, because 1220512514145 - 2¹⁷ = 1220512383073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30777877 + ... + 30817506.

It is an arithmetic number, because the mean of its divisors is an integer number (122143646472).

Almost surely, 2^{1220512514145} is an apocalyptic number.

1220512514145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220512514145 is a deficient number, since it is larger than the sum of its proper divisors (733785829407).

1220512514145 is a wasteful number, since it uses less digits than its factorization.

1220512514145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61596712.

The product of its (nonzero) digits is 16000, while the sum is 33.

Adding to 1220512514145 its reverse (5414152150221), we get a palindrome (6634664664366).

The spelling of 1220512514145 in words is "one trillion, two hundred twenty billion, five hundred twelve million, five hundred fourteen thousand, one hundred forty-five".