1212122012101 has 32 divisors (see below), whose sum is σ = 1628494737408. Its totient is φ = 871304091840.

The previous prime is 1212122012099. The next prime is 1212122012117. The reversal of 1212122012101 is 1012102212121.

It is not a de Polignac number, because 1212122012101 - 2¹ = 1212122012099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212122012401) 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 31 ways as a sum of consecutive naturals, for example, 1202110 + ... + 1967056.

It is an arithmetic number, because the mean of its divisors is an integer number (50890460544).

Almost surely, 2^{1212122012101} is an apocalyptic number.

1212122012101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212122012101 is a deficient number, since it is larger than the sum of its proper divisors (416372725307).

1212122012101 is a wasteful number, since it uses less digits than its factorization.

1212122012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766561.

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

Adding to 1212122012101 its reverse (1012102212121), we get a palindrome (2224224224222).

The spelling of 1212122012101 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, twelve thousand, one hundred one".