1220520532441 has 4 divisors (see below), whose sum is σ = 1394880608512. Its totient is φ = 1046160456372.

The previous prime is 1220520532433. The next prime is 1220520532457. The reversal of 1220520532441 is 1442350250221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220520532441 - 2³ = 1220520532433 is a prime.

It is a super-2 number, since 2×1220520532441² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220520532481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87180038025 + ... + 87180038038.

It is an arithmetic number, because the mean of its divisors is an integer number (348720152128).

Almost surely, 2^{1220520532441} is an apocalyptic number.

It is an amenable number.

1220520532441 is a deficient number, since it is larger than the sum of its proper divisors (174360076071).

1220520532441 is an equidigital number, since it uses as much as digits as its factorization.

1220520532441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174360076070.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 1220520532441 its reverse (1442350250221), we get a palindrome (2662870782662).

The spelling of 1220520532441 in words is "one trillion, two hundred twenty billion, five hundred twenty million, five hundred thirty-two thousand, four hundred forty-one".