201001010221 has 8 divisors (see below), whose sum is σ = 219277194624. Its totient is φ = 182725386720.

The previous prime is 201001010209. The next prime is 201001010261. The reversal of 201001010221 is 122010100102.

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 201001010221 - 2²¹ = 200998913069 is a prime.

It is a super-2 number, since 2×201001010221² (a number of 23 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 = 201001010198 and 201001010207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001010261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043740 + ... + 1221226.

It is an arithmetic number, because the mean of its divisors is an integer number (27409649328).

Almost surely, 2^201001010221 is an apocalyptic number.

It is an amenable number.

201001010221 is a deficient number, since it is larger than the sum of its proper divisors (18276184403).

201001010221 is a wasteful number, since it uses less digits than its factorization.

201001010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280451.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201001010221 its reverse (122010100102), we get a palindrome (323011110323).

The spelling of 201001010221 in words is "two hundred one billion, one million, ten thousand, two hundred twenty-one".