1220332013243 has 16 divisors (see below), whose sum is σ = 1468317227520. Its totient is φ = 990778464576.

The previous prime is 1220332013227. The next prime is 1220332013249. The reversal of 1220332013243 is 3423102330221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220332013243 - 2⁴ = 1220332013227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220332013249) 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, 14255 + ... + 1562327.

It is an arithmetic number, because the mean of its divisors is an integer number (91769826720).

Almost surely, 2^{1220332013243} is an apocalyptic number.

1220332013243 is a deficient number, since it is larger than the sum of its proper divisors (247985214277).

1220332013243 is a wasteful number, since it uses less digits than its factorization.

1220332013243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554026.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 1220332013243 its reverse (3423102330221), we get a palindrome (4643434343464).

The spelling of 1220332013243 in words is "one trillion, two hundred twenty billion, three hundred thirty-two million, thirteen thousand, two hundred forty-three".