1202210112121 has 2 divisors, whose sum is σ = 1202210112122. Its totient is φ = 1202210112120.

The previous prime is 1202210112097. The next prime is 1202210112167. The reversal of 1202210112121 is 1212110122021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1009695386896 + 192514725225 = 1004836^2 + 438765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202210112121 - 2²⁵ = 1202176557689 is a prime.

It is a super-2 number, since 2×1202210112121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202210112095 and 1202210112104.

It is not a weakly prime, because it can be changed into another prime (1202210118121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601105056060 + 601105056061.

It is an arithmetic number, because the mean of its divisors is an integer number (601105056061).

Almost surely, 2^{1202210112121} is an apocalyptic number.

It is an amenable number.

1202210112121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202210112121 is an equidigital number, since it uses as much as digits as its factorization.

1202210112121 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 1202210112121 its reverse (1212110122021), we get a palindrome (2414320234142).

The spelling of 1202210112121 in words is "one trillion, two hundred two billion, two hundred ten million, one hundred twelve thousand, one hundred twenty-one".