1220502132011 has 4 divisors (see below), whose sum is σ = 1221782827752. Its totient is φ = 1219221436272.

The previous prime is 1220502131941. The next prime is 1220502132019. The reversal of 1220502132011 is 1102312050221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220502132011 - 2¹⁰ = 1220502130987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220502132019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640346441 + ... + 640348346.

It is an arithmetic number, because the mean of its divisors is an integer number (305445706938).

Almost surely, 2^{1220502132011} is an apocalyptic number.

1220502132011 is a deficient number, since it is larger than the sum of its proper divisors (1280695741).

1220502132011 is an equidigital number, since it uses as much as digits as its factorization.

1220502132011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280695740.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 1220502132011 its reverse (1102312050221), we get a palindrome (2322814182232).

The spelling of 1220502132011 in words is "one trillion, two hundred twenty billion, five hundred two million, one hundred thirty-two thousand, eleven".