1212210121201 has 16 divisors (see below), whose sum is σ = 1221535961280. Its totient is φ = 1202919690240.

The previous prime is 1212210121183. The next prime is 1212210121267. The reversal of 1212210121201 is 1021210122121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212210121201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212210521201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138486441 + ... + 138495193.

It is an arithmetic number, because the mean of its divisors is an integer number (76345997580).

Almost surely, 2^{1212210121201} is an apocalyptic number.

It is an amenable number.

1212210121201 is a deficient number, since it is larger than the sum of its proper divisors (9325840079).

1212210121201 is an equidigital number, since it uses as much as digits as its factorization.

1212210121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10656.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212210121201 its reverse (1021210122121), we get a palindrome (2233420243322).

The spelling of 1212210121201 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred one".