1212211020101 has 8 divisors (see below), whose sum is σ = 1219347623808. Its totient is φ = 1205094436000.

The previous prime is 1212211020073. The next prime is 1212211020121. The reversal of 1212211020101 is 1010201122121.

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

It is a cyclic number.

It is not a de Polignac number, because 1212211020101 - 2¹⁸ = 1212210757957 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 (1212211020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4883435 + ... + 5125656.

It is an arithmetic number, because the mean of its divisors is an integer number (152418452976).

Almost surely, 2^{1212211020101} is an apocalyptic number.

It is an amenable number.

1212211020101 is a deficient number, since it is larger than the sum of its proper divisors (7136603707).

1212211020101 is a wasteful number, since it uses less digits than its factorization.

1212211020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009803.

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

Adding to 1212211020101 its reverse (1010201122121), we get a palindrome (2222412142222).

The spelling of 1212211020101 in words is "one trillion, two hundred twelve billion, two hundred eleven million, twenty thousand, one hundred one".