1212021010201 has 4 divisors (see below), whose sum is σ = 1228624037812. Its totient is φ = 1195417982592.

The previous prime is 1212021010043. The next prime is 1212021010219. The reversal of 1212021010201 is 1020101202121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 483087552025 + 728933458176 = 695045^2 + 853776^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212021010201 - 2³¹ = 1209873526553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212021010261) 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 in 3 ways as a sum of consecutive naturals, for example, 8301513696 + ... + 8301513841.

It is an arithmetic number, because the mean of its divisors is an integer number (307156009453).

Almost surely, 2^{1212021010201} is an apocalyptic number.

It is an amenable number.

1212021010201 is a deficient number, since it is larger than the sum of its proper divisors (16603027611).

1212021010201 is an equidigital number, since it uses as much as digits as its factorization.

1212021010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16603027610.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212021010201 its reverse (1020101202121), we get a palindrome (2232122212322).

The spelling of 1212021010201 in words is "one trillion, two hundred twelve billion, twenty-one million, ten thousand, two hundred one".