201001320020221 has 32 divisors (see below), whose sum is σ = 243616669148160. Its totient is φ = 161893576723200.

The previous prime is 201001320020203. The next prime is 201001320020227. The reversal of 201001320020221 is 122020023100102.

It is a happy number.

It is not a de Polignac number, because 201001320020221 - 2⁷ = 201001320020093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201001320020195 and 201001320020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001320020227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1073568306 + ... + 1073755516.

It is an arithmetic number, because the mean of its divisors is an integer number (7613020910880).

Almost surely, 2^{201001320020221} is an apocalyptic number.

It is an amenable number.

201001320020221 is a deficient number, since it is larger than the sum of its proper divisors (42615349127939).

201001320020221 is a wasteful number, since it uses less digits than its factorization.

201001320020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201585.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 201001320020221 its reverse (122020023100102), we get a palindrome (323021343120323).

The spelling of 201001320020221 in words is "two hundred one trillion, one billion, three hundred twenty million, twenty thousand, two hundred twenty-one".