1320121552411 has 8 divisors (see below), whose sum is σ = 1330726454784. Its totient is φ = 1309519935360.

The previous prime is 1320121552391. The next prime is 1320121552441. The reversal of 1320121552411 is 1142551210231.

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 1320121552411 - 2¹³ = 1320121544219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320121552411.

It is not an unprimeable number, because it can be changed into a prime (1320121552441) 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, 11260 + ... + 1624921.

It is an arithmetic number, because the mean of its divisors is an integer number (166340806848).

Almost surely, 2^{1320121552411} is an apocalyptic number.

1320121552411 is a deficient number, since it is larger than the sum of its proper divisors (10604902373).

1320121552411 is a wasteful number, since it uses less digits than its factorization.

1320121552411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642661.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 1320121552411 its reverse (1142551210231), we get a palindrome (2462672762642).

The spelling of 1320121552411 in words is "one trillion, three hundred twenty billion, one hundred twenty-one million, five hundred fifty-two thousand, four hundred eleven".