1220435530213 has 2 divisors, whose sum is σ = 1220435530214. Its totient is φ = 1220435530212.

The previous prime is 1220435530177. The next prime is 1220435530241. The reversal of 1220435530213 is 3120355340221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 915960015364 + 304475514849 = 957058^2 + 551793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220435530213 - 2⁹ = 1220435529701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220435570213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610217765106 + 610217765107.

It is an arithmetic number, because the mean of its divisors is an integer number (610217765107).

Almost surely, 2^{1220435530213} is an apocalyptic number.

It is an amenable number.

1220435530213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220435530213 is an equidigital number, since it uses as much as digits as its factorization.

1220435530213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 1220435530213 in words is "one trillion, two hundred twenty billion, four hundred thirty-five million, five hundred thirty thousand, two hundred thirteen".