121022021303021 has 16 divisors (see below), whose sum is σ = 121839718727664. Its totient is φ = 120206367719424.

The previous prime is 121022021303017. The next prime is 121022021303023. The reversal of 121022021303021 is 120303120220121.

It can be written as a sum of positive squares in 8 ways, for example, as 37575367515625 + 83446653787396 = 6129875^2 + 9134914^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022021303021 - 2² = 121022021303017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121022021302984 and 121022021303002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022021303023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606657725 + ... + 606857181.

It is an arithmetic number, because the mean of its divisors is an integer number (7614982420479).

Almost surely, 2^{121022021303021} is an apocalyptic number.

It is an amenable number.

121022021303021 is a deficient number, since it is larger than the sum of its proper divisors (817697424643).

121022021303021 is a wasteful number, since it uses less digits than its factorization.

121022021303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204560.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121022021303021 its reverse (120303120220121), we get a palindrome (241325141523142).

The spelling of 121022021303021 in words is "one hundred twenty-one trillion, twenty-two billion, twenty-one million, three hundred three thousand, twenty-one".