1212100320253 has 2 divisors, whose sum is σ = 1212100320254. Its totient is φ = 1212100320252.

The previous prime is 1212100320203. The next prime is 1212100320257. The reversal of 1212100320253 is 3520230012121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1109529368964 + 102570951289 = 1053342^2 + 320267^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212100320253 - 2¹³ = 1212100312061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212100320257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050160126 + 606050160127.

It is an arithmetic number, because the mean of its divisors is an integer number (606050160127).

Almost surely, 2^{1212100320253} is an apocalyptic number.

It is an amenable number.

1212100320253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212100320253 is an equidigital number, since it uses as much as digits as its factorization.

1212100320253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 1212100320253 its reverse (3520230012121), we get a palindrome (4732330332374).

The spelling of 1212100320253 in words is "one trillion, two hundred twelve billion, one hundred million, three hundred twenty thousand, two hundred fifty-three".