1212221200101 has 8 divisors (see below), whose sum is σ = 1616561365344. Its totient is φ = 808014250800.

The previous prime is 1212221200063. The next prime is 1212221200117. The reversal of 1212221200101 is 1010021222121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1212221200101 - 2⁶ = 1212221200037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212221200121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33282750 + ... + 33319151.

It is an arithmetic number, because the mean of its divisors is an integer number (202070170668).

Almost surely, 2^{1212221200101} is an apocalyptic number.

It is an amenable number.

1212221200101 is a deficient number, since it is larger than the sum of its proper divisors (404340165243).

1212221200101 is an equidigital number, since it uses as much as digits as its factorization.

1212221200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66607971.

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

Adding to 1212221200101 its reverse (1010021222121), we get a palindrome (2222242422222).

The spelling of 1212221200101 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, two hundred thousand, one hundred one".