1012100202121 has 2 divisors, whose sum is σ = 1012100202122. Its totient is φ = 1012100202120.

The previous prime is 1012100202059. The next prime is 1012100202131. The reversal of 1012100202121 is 1212020012101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 877219560000 + 134880642121 = 936600^2 + 367261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012100202121 - 2¹¹ = 1012100200073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012100202131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506050101060 + 506050101061.

It is an arithmetic number, because the mean of its divisors is an integer number (506050101061).

Almost surely, 2^{1012100202121} is an apocalyptic number.

It is an amenable number.

1012100202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012100202121 is an equidigital number, since it uses as much as digits as its factorization.

1012100202121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012100202121 its reverse (1212020012101), we get a palindrome (2224120214222).

The spelling of 1012100202121 in words is "one trillion, twelve billion, one hundred million, two hundred two thousand, one hundred twenty-one".