201010112021021 has 16 divisors (see below), whose sum is σ = 205098415484928. Its totient is φ = 196963054272000.

The previous prime is 201010112020997. The next prime is 201010112021053. The reversal of 201010112021021 is 120120211010102.

It is a cyclic number.

It is not a de Polignac number, because 201010112021021 - 2⁴² = 196612065509917 is a prime.

It is a super-2 number, since 2×201010112021021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201010112020987 and 201010112021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201010112024021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409886756 + ... + 410376866.

It is an arithmetic number, because the mean of its divisors is an integer number (12818650967808).

Almost surely, 2^{201010112021021} is an apocalyptic number.

It is an amenable number.

201010112021021 is a deficient number, since it is larger than the sum of its proper divisors (4088303463907).

201010112021021 is a wasteful number, since it uses less digits than its factorization.

201010112021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532172.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201010112021021 its reverse (120120211010102), we get a palindrome (321130323031123).

The spelling of 201010112021021 in words is "two hundred one trillion, ten billion, one hundred twelve million, twenty-one thousand, twenty-one".