201001012112221 has 8 divisors (see below), whose sum is σ = 201152000294784. Its totient is φ = 200850029707440.

The previous prime is 201001012112099. The next prime is 201001012112227. The reversal of 201001012112221 is 122211210100102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201001012112221 - 2⁷ = 201001012112093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201001012112195 and 201001012112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001012112227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69465216 + ... + 72300886.

It is an arithmetic number, because the mean of its divisors is an integer number (25144000036848).

Almost surely, 2^{201001012112221} is an apocalyptic number.

It is an amenable number.

201001012112221 is a deficient number, since it is larger than the sum of its proper divisors (150988182563).

201001012112221 is a wasteful number, since it uses less digits than its factorization.

201001012112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888891.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201001012112221 its reverse (122211210100102), we get a palindrome (323212222212323).

The spelling of 201001012112221 in words is "two hundred one trillion, one billion, twelve million, one hundred twelve thousand, two hundred twenty-one".