1010120202121 has 2 divisors, whose sum is σ = 1010120202122. Its totient is φ = 1010120202120.

The previous prime is 1010120202101. The next prime is 1010120202193. The reversal of 1010120202121 is 1212020210101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 665978405625 + 344141796496 = 816075^2 + 586636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010120202121 - 2²⁷ = 1009985984393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1010120202101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505060101060 + 505060101061.

It is an arithmetic number, because the mean of its divisors is an integer number (505060101061).

Almost surely, 2^{1010120202121} is an apocalyptic number.

It is an amenable number.

1010120202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010120202121 is an equidigital number, since it uses as much as digits as its factorization.

1010120202121 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 1010120202121 its reverse (1212020210101), we get a palindrome (2222140412222).

The spelling of 1010120202121 in words is "one trillion, ten billion, one hundred twenty million, two hundred two thousand, one hundred twenty-one".