1220120202253 has 2 divisors, whose sum is σ = 1220120202254. Its totient is φ = 1220120202252.

The previous prime is 1220120202187. The next prime is 1220120202299. The reversal of 1220120202253 is 3522020210221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1192994771049 + 27125431204 = 1092243^2 + 164698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220120202253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220120202853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610060101126 + 610060101127.

It is an arithmetic number, because the mean of its divisors is an integer number (610060101127).

Almost surely, 2^{1220120202253} is an apocalyptic number.

It is an amenable number.

1220120202253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220120202253 is an equidigital number, since it uses as much as digits as its factorization.

1220120202253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 1220120202253 its reverse (3522020210221), we get a palindrome (4742140412474).

The spelling of 1220120202253 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred two thousand, two hundred fifty-three".