1212201012101 has 4 divisors (see below), whose sum is σ = 1212472993452. Its totient is φ = 1211929030752.

The previous prime is 1212201012053. The next prime is 1212201012107. The reversal of 1212201012101 is 1012101022121.

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 475788171076 + 736412841025 = 689774^2 + 858145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212201012101 - 2⁶ = 1212201012037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201012107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135983990 + ... + 135992903.

It is an arithmetic number, because the mean of its divisors is an integer number (303118248363).

Almost surely, 2^{1212201012101} is an apocalyptic number.

It is an amenable number.

1212201012101 is a deficient number, since it is larger than the sum of its proper divisors (271981351).

1212201012101 is an equidigital number, since it uses as much as digits as its factorization.

1212201012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271981350.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1212201012101 its reverse (1012101022121), we get a palindrome (2224302034222).

The spelling of 1212201012101 in words is "one trillion, two hundred twelve billion, two hundred one million, twelve thousand, one hundred one".