1021322012121 has 12 divisors (see below), whose sum is σ = 1482886654548. Its totient is φ = 677353457664.

The previous prime is 1021322012077. The next prime is 1021322012131. The reversal of 1021322012121 is 1212102231201.

It can be written as a sum of positive squares in 2 ways, for example, as 271504565721 + 749817446400 = 521061^2 + 865920^2 .

It is not a de Polignac number, because 1021322012121 - 2⁷ = 1021322011993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021322012094 and 1021322012103.

It is not an unprimeable number, because it can be changed into a prime (1021322012131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293988480 + ... + 293991953.

It is an arithmetic number, because the mean of its divisors is an integer number (123573887879).

Almost surely, 2^{1021322012121} is an apocalyptic number.

It is an amenable number.

1021322012121 is a deficient number, since it is larger than the sum of its proper divisors (461564642427).

1021322012121 is a wasteful number, since it uses less digits than its factorization.

1021322012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587980632 (or 587980629 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1021322012121 its reverse (1212102231201), we get a palindrome (2233424243322).

The spelling of 1021322012121 in words is "one trillion, twenty-one billion, three hundred twenty-two million, twelve thousand, one hundred twenty-one".