1210122022121 has 4 divisors (see below), whose sum is σ = 1210214418000. Its totient is φ = 1210029626244.

The previous prime is 1210122022049. The next prime is 1210122022127. The reversal of 1210122022121 is 1212202210121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1210122022121 - 2²² = 1210117827817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1210122022121.

It is not an unprimeable number, because it can be changed into a prime (1210122022127) 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 3 ways as a sum of consecutive naturals, for example, 46178291 + ... + 46204488.

It is an arithmetic number, because the mean of its divisors is an integer number (302553604500).

Almost surely, 2^{1210122022121} is an apocalyptic number.

It is an amenable number.

1210122022121 is a deficient number, since it is larger than the sum of its proper divisors (92395879).

1210122022121 is an equidigital number, since it uses as much as digits as its factorization.

1210122022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92395878.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1210122022121 its reverse (1212202210121), we get a palindrome (2422324232242).

The spelling of 1210122022121 in words is "one trillion, two hundred ten billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty-one".