1217260533020 has 48 divisors (see below), whose sum is σ = 2951543098560. Its totient is φ = 413043922944.

The previous prime is 1217260533011. The next prime is 1217260533029. The reversal of 1217260533020 is 203350627121.

It is an interprime number because it is at equal distance from previous prime (1217260533011) and next prime (1217260533029).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217260533029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44804555 + ... + 44831714.

It is an arithmetic number, because the mean of its divisors is an integer number (61490481220).

Almost surely, 2^{1217260533020} is an apocalyptic number.

1217260533020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1217260533020 is an abundant number, since it is smaller than the sum of its proper divisors (1734282565540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217260533020 is a wasteful number, since it uses less digits than its factorization.

1217260533020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89636382 (or 89636380 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 1217260533020 in words is "one trillion, two hundred seventeen billion, two hundred sixty million, five hundred thirty-three thousand, twenty".