201001010220121 has 2 divisors, whose sum is σ = 201001010220122. Its totient is φ = 201001010220120.

The previous prime is 201001010220113. The next prime is 201001010220133. The reversal of 201001010220121 is 121022010100102.

201001010220121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200422376157721 + 578634062400 = 14157061^2 + 760680^2 .

It is a cyclic number.

It is not a de Polignac number, because 201001010220121 - 2³ = 201001010220113 is a prime.

It is a super-2 number, since 2×201001010220121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201001040220121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500505110060 + 100500505110061.

It is an arithmetic number, because the mean of its divisors is an integer number (100500505110061).

Almost surely, 2^{201001010220121} is an apocalyptic number.

It is an amenable number.

201001010220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001010220121 is an equidigital number, since it uses as much as digits as its factorization.

201001010220121 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 201001010220121 its reverse (121022010100102), we get a palindrome (322023020320223).

The spelling of 201001010220121 in words is "two hundred one trillion, one billion, ten million, two hundred twenty thousand, one hundred twenty-one".