1212021102201 has 64 divisors (see below), whose sum is σ = 2126402224128. Its totient is φ = 595859493888.

The previous prime is 1212021102139. The next prime is 1212021102283. The reversal of 1212021102201 is 1022011202121.

It is not a de Polignac number, because 1212021102201 - 2¹¹ = 1212021100153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212021102701) 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 63 ways as a sum of consecutive naturals, for example, 789721 + ... + 1745766.

It is an arithmetic number, because the mean of its divisors is an integer number (33225034752).

Almost surely, 2^{1212021102201} is an apocalyptic number.

It is an amenable number.

1212021102201 is a deficient number, since it is larger than the sum of its proper divisors (914381121927).

1212021102201 is a wasteful number, since it uses less digits than its factorization.

1212021102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535630.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212021102201 its reverse (1022011202121), we get a palindrome (2234032304322).

The spelling of 1212021102201 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred two thousand, two hundred one".