1213022100122 has 16 divisors (see below), whose sum is σ = 2088391211712. Its totient is φ = 517635425760.

The previous prime is 1213022100097. The next prime is 1213022100127. The reversal of 1213022100122 is 2210012203121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213022100122.

It is not an unprimeable number, because it can be changed into a prime (1213022100127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185929004 + ... + 185935527.

It is an arithmetic number, because the mean of its divisors is an integer number (130524450732).

Almost surely, 2^{1213022100122} is an apocalyptic number.

1213022100122 is a deficient number, since it is larger than the sum of its proper divisors (875369111590).

1213022100122 is a wasteful number, since it uses less digits than its factorization.

1213022100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371864773.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1213022100122 its reverse (2210012203121), we get a palindrome (3423034303243).

The spelling of 1213022100122 in words is "one trillion, two hundred thirteen billion, twenty-two million, one hundred thousand, one hundred twenty-two".