10210021210121 has 2 divisors, whose sum is σ = 10210021210122. Its totient is φ = 10210021210120.

The previous prime is 10210021210061. The next prime is 10210021210159. The reversal of 10210021210121 is 12101212001201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9722173441600 + 487847768521 = 3118040^2 + 698461^2 .

It is a cyclic number.

It is not a de Polignac number, because 10210021210121 - 2¹⁸ = 10210020947977 is a prime.

It is a super-2 number, since 2×10210021210121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10210021210096 and 10210021210105.

It is not a weakly prime, because it can be changed into another prime (10210021210421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105010605060 + 5105010605061.

It is an arithmetic number, because the mean of its divisors is an integer number (5105010605061).

Almost surely, 2^{10210021210121} is an apocalyptic number.

It is an amenable number.

10210021210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10210021210121 is an equidigital number, since it uses as much as digits as its factorization.

10210021210121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10210021210121 its reverse (12101212001201), we get a palindrome (22311233211322).

The spelling of 10210021210121 in words is "ten trillion, two hundred ten billion, twenty-one million, two hundred ten thousand, one hundred twenty-one".