201010022110021 has 2 divisors, whose sum is σ = 201010022110022. Its totient is φ = 201010022110020.

The previous prime is 201010022109997. The next prime is 201010022110087. The reversal of 201010022110021 is 120011220010102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189808208868100 + 11201813241921 = 13777090^2 + 3346911^2 .

It is a cyclic number.

It is not a de Polignac number, because 201010022110021 - 2⁵ = 201010022109989 is a prime.

It is a super-2 number, since 2×201010022110021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201010022109983 and 201010022110010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201010022110091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505011055010 + 100505011055011.

It is an arithmetic number, because the mean of its divisors is an integer number (100505011055011).

Almost surely, 2^{201010022110021} is an apocalyptic number.

It is an amenable number.

201010022110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010022110021 is an equidigital number, since it uses as much as digits as its factorization.

201010022110021 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 201010022110021 its reverse (120011220010102), we get a palindrome (321021242120123).

The spelling of 201010022110021 in words is "two hundred one trillion, ten billion, twenty-two million, one hundred ten thousand, twenty-one".