1201210121893 has 2 divisors, whose sum is σ = 1201210121894. Its totient is φ = 1201210121892.

The previous prime is 1201210121863. The next prime is 1201210121911. The reversal of 1201210121893 is 3981210121021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1171661199489 + 29548922404 = 1082433^2 + 171898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201210121893 - 2¹⁷ = 1201209990821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201210121863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600605060946 + 600605060947.

It is an arithmetic number, because the mean of its divisors is an integer number (600605060947).

Almost surely, 2^{1201210121893} is an apocalyptic number.

It is an amenable number.

1201210121893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201210121893 is an equidigital number, since it uses as much as digits as its factorization.

1201210121893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 1201210121893 in words is "one trillion, two hundred one billion, two hundred ten million, one hundred twenty-one thousand, eight hundred ninety-three".