121210203112253 has 2 divisors, whose sum is σ = 121210203112254. Its totient is φ = 121210203112252.

The previous prime is 121210203112223. The next prime is 121210203112351. The reversal of 121210203112253 is 352211302012121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80847395944324 + 40362807167929 = 8991518^2 + 6353173^2 .

It is a cyclic number.

It is not a de Polignac number, because 121210203112253 - 2¹² = 121210203108157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121210203112223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605101556126 + 60605101556127.

It is an arithmetic number, because the mean of its divisors is an integer number (60605101556127).

Almost surely, 2^{121210203112253} is an apocalyptic number.

It is an amenable number.

121210203112253 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210203112253 is an equidigital number, since it uses as much as digits as its factorization.

121210203112253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 121210203112253 its reverse (352211302012121), we get a palindrome (473421505124374).

The spelling of 121210203112253 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred three million, one hundred twelve thousand, two hundred fifty-three".