1212222022101 has 12 divisors (see below), whose sum is σ = 1751445428928. Its totient is φ = 807936600744.

The previous prime is 1212222022079. The next prime is 1212222022129. The reversal of 1212222022101 is 1012202222121.

It is a happy number.

It is not a de Polignac number, because 1212222022101 - 2⁵ = 1212222022069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212222022181) 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 11 ways as a sum of consecutive naturals, for example, 17581515 + ... + 17650328.

It is an arithmetic number, because the mean of its divisors is an integer number (145953785744).

Almost surely, 2^{1212222022101} is an apocalyptic number.

It is an amenable number.

1212222022101 is a deficient number, since it is larger than the sum of its proper divisors (539223406827).

1212222022101 is a wasteful number, since it uses less digits than its factorization.

1212222022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35235672 (or 35235669 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212222022101 its reverse (1012202222121), we get a palindrome (2224424244222).

The spelling of 1212222022101 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, twenty-two thousand, one hundred one".