1010211010121 has 2 divisors, whose sum is σ = 1010211010122. Its totient is φ = 1010211010120.

The previous prime is 1010211010103. The next prime is 1010211010129. The reversal of 1010211010121 is 1210101120101.

1010211010121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 852732199225 + 157478810896 = 923435^2 + 396836^2 .

It is an emirp because it is prime and its reverse (1210101120101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1010211010121 - 2²² = 1010206815817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1010211010129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505105505060 + 505105505061.

It is an arithmetic number, because the mean of its divisors is an integer number (505105505061).

Almost surely, 2^{1010211010121} is an apocalyptic number.

It is an amenable number.

1010211010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010211010121 is an equidigital number, since it uses as much as digits as its factorization.

1010211010121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1010211010121 its reverse (1210101120101), we get a palindrome (2220312130222).

The spelling of 1010211010121 in words is "one trillion, ten billion, two hundred eleven million, ten thousand, one hundred twenty-one".