1210012020001 has 2 divisors, whose sum is σ = 1210012020002. Its totient is φ = 1210012020000.

The previous prime is 1210012019989. The next prime is 1210012020029. The reversal of 1210012020001 is 1000202100121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209067379776 + 944640225 = 1099576^2 + 30735^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210012020001 - 2⁷ = 1210012019873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1210012020001.

It is not a weakly prime, because it can be changed into another prime (1210012020031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605006010000 + 605006010001.

It is an arithmetic number, because the mean of its divisors is an integer number (605006010001).

Almost surely, 2^{1210012020001} is an apocalyptic number.

It is an amenable number.

1210012020001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210012020001 is an equidigital number, since it uses as much as digits as its factorization.

1210012020001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1210012020001 its reverse (1000202100121), we get a palindrome (2210214120122).

The spelling of 1210012020001 in words is "one trillion, two hundred ten billion, twelve million, twenty thousand, one".