1021120121122 has 4 divisors (see below), whose sum is σ = 1531680181686. Its totient is φ = 510560060560.

The previous prime is 1021120121093. The next prime is 1021120121129. The reversal of 1021120121122 is 2211210211201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 889133957721 + 131986163401 = 942939^2 + 363299^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021120121096 and 1021120121105.

It is not an unprimeable number, because it can be changed into a prime (1021120121129) 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 as a sum of consecutive naturals, namely, 255280030279 + ... + 255280030282.

Almost surely, 2^{1021120121122} is an apocalyptic number.

1021120121122 is a deficient number, since it is larger than the sum of its proper divisors (510560060564).

1021120121122 is an equidigital number, since it uses as much as digits as its factorization.

1021120121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510560060563.

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

Adding to 1021120121122 its reverse (2211210211201), we get a palindrome (3232330332323).

The spelling of 1021120121122 in words is "one trillion, twenty-one billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twenty-two".