10221011202121 has 2 divisors, whose sum is σ = 10221011202122. Its totient is φ = 10221011202120.

The previous prime is 10221011202113. The next prime is 10221011202163. The reversal of 10221011202121 is 12120211012201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8106895202121 + 2114116000000 = 2847261^2 + 1454000^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221011202121 - 2³ = 10221011202113 is a prime.

It is a super-3 number, since 3×10221011202121³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10221011202095 and 10221011202104.

It is not a weakly prime, because it can be changed into another prime (10221011202221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110505601060 + 5110505601061.

It is an arithmetic number, because the mean of its divisors is an integer number (5110505601061).

Almost surely, 2^{10221011202121} is an apocalyptic number.

It is an amenable number.

10221011202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221011202121 is an equidigital number, since it uses as much as digits as its factorization.

10221011202121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 10221011202121 its reverse (12120211012201), we get a palindrome (22341222214322).

It can be divided in two parts, 1022101 and 1202121, that added together give a palindrome (2224222).

The spelling of 10221011202121 in words is "ten trillion, two hundred twenty-one billion, eleven million, two hundred two thousand, one hundred twenty-one".