1011010200121 has 2 divisors, whose sum is σ = 1011010200122. Its totient is φ = 1011010200120.

The previous prime is 1011010200107. The next prime is 1011010200143. The reversal of 1011010200121 is 1210020101101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824761850896 + 186248349225 = 908164^2 + 431565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011010200121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011010200098 and 1011010200107.

It is not a weakly prime, because it can be changed into another prime (1011010200721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505505100060 + 505505100061.

It is an arithmetic number, because the mean of its divisors is an integer number (505505100061).

Almost surely, 2^{1011010200121} is an apocalyptic number.

It is an amenable number.

1011010200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011010200121 is an equidigital number, since it uses as much as digits as its factorization.

1011010200121 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 10.

Adding to 1011010200121 its reverse (1210020101101), we get a palindrome (2221030301222).

The spelling of 1011010200121 in words is "one trillion, eleven billion, ten million, two hundred thousand, one hundred twenty-one".