1212101021983 has 2 divisors, whose sum is σ = 1212101021984. Its totient is φ = 1212101021982.

The previous prime is 1212101021981. The next prime is 1212101022031. The reversal of 1212101021983 is 3891201012121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212101021983 - 2¹ = 1212101021981 is a prime.

Together with 1212101021981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212101021981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050510991 + 606050510992.

It is an arithmetic number, because the mean of its divisors is an integer number (606050510992).

Almost surely, 2^{1212101021983} is an apocalyptic number.

1212101021983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212101021983 is an equidigital number, since it uses as much as digits as its factorization.

1212101021983 is an evil number, because the sum of its binary digits is even.

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

The spelling of 1212101021983 in words is "one trillion, two hundred twelve billion, one hundred one million, twenty-one thousand, nine hundred eighty-three".