1212201000253 has 2 divisors, whose sum is σ = 1212201000254. Its totient is φ = 1212201000252.

The previous prime is 1212201000209. The next prime is 1212201000271. The reversal of 1212201000253 is 3520001022121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 989871775929 + 222329224324 = 994923^2 + 471518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212201000253 - 2³³ = 1203611065661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212201000253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212201000853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606100500126 + 606100500127.

It is an arithmetic number, because the mean of its divisors is an integer number (606100500127).

Almost surely, 2^{1212201000253} is an apocalyptic number.

It is an amenable number.

1212201000253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212201000253 is an equidigital number, since it uses as much as digits as its factorization.

1212201000253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 1212201000253 its reverse (3520001022121), we get a palindrome (4732202022374).

The spelling of 1212201000253 in words is "one trillion, two hundred twelve billion, two hundred one million, two hundred fifty-three", and thus it is an aban number.