1212687561203 has 2 divisors, whose sum is σ = 1212687561204. Its totient is φ = 1212687561202.

The previous prime is 1212687561139. The next prime is 1212687561209. The reversal of 1212687561203 is 3021657862121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212687561203 - 2⁶ = 1212687561139 is a prime.

It is a super-3 number, since 3×1212687561203³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1212687561209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606343780601 + 606343780602.

It is an arithmetic number, because the mean of its divisors is an integer number (606343780602).

Almost surely, 2^{1212687561203} is an apocalyptic number.

1212687561203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212687561203 is an equidigital number, since it uses as much as digits as its factorization.

1212687561203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 1212687561203 in words is "one trillion, two hundred twelve billion, six hundred eighty-seven million, five hundred sixty-one thousand, two hundred three".