1220504532497 has 8 divisors (see below), whose sum is σ = 1234532550600. Its totient is φ = 1206483503104.

The previous prime is 1220504532469. The next prime is 1220504532517. The reversal of 1220504532497 is 7942354050221.

It can be written as a sum of positive squares in 4 ways, for example, as 961992256 + 1219542540241 = 31016^2 + 1104329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220504532497 - 2¹² = 1220504528401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220504532197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1395488 + ... + 2094849.

It is an arithmetic number, because the mean of its divisors is an integer number (154316568825).

Almost surely, 2^{1220504532497} is an apocalyptic number.

It is an amenable number.

1220504532497 is a deficient number, since it is larger than the sum of its proper divisors (14028018103).

1220504532497 is an equidigital number, since it uses as much as digits as its factorization.

1220504532497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494355.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 1220504532497 in words is "one trillion, two hundred twenty billion, five hundred four million, five hundred thirty-two thousand, four hundred ninety-seven".