1022212120121 has 8 divisors (see below), whose sum is σ = 1082401947720. Its totient is φ = 962028926208.

The previous prime is 1022212120103. The next prime is 1022212120123. The reversal of 1022212120121 is 1210212122201.

It can be written as a sum of positive squares in 4 ways, for example, as 353030858896 + 669181261225 = 594164^2 + 818035^2 .

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 1022212120121 - 2¹⁸ = 1022211857977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 1022212120121.

It is not an unprimeable number, because it can be changed into a prime (1022212120123) 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, 1339406 + ... + 1959191.

It is an arithmetic number, because the mean of its divisors is an integer number (135300243465).

Almost surely, 2^{1022212120121} is an apocalyptic number.

It is an amenable number.

1022212120121 is a deficient number, since it is larger than the sum of its proper divisors (60189827599).

1022212120121 is a wasteful number, since it uses less digits than its factorization.

1022212120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316843.

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

Adding to 1022212120121 its reverse (1210212122201), we get a palindrome (2232424242322).

The spelling of 1022212120121 in words is "one trillion, twenty-two billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty-one".