201021113221 has 8 divisors (see below), whose sum is σ = 205933621824. Its totient is φ = 196109059680.

The previous prime is 201021113219. The next prime is 201021113281. The reversal of 201021113221 is 122311120102.

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 201021113221 - 2¹ = 201021113219 is a prime.

It is a super-2 number, since 2×201021113221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201021113195 and 201021113204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021113281) 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, 886696 + ... + 1090078.

It is an arithmetic number, because the mean of its divisors is an integer number (25741702728).

Almost surely, 2^201021113221 is an apocalyptic number.

It is an amenable number.

201021113221 is a deficient number, since it is larger than the sum of its proper divisors (4912508603).

201021113221 is a wasteful number, since it uses less digits than its factorization.

201021113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227531.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 201021113221 its reverse (122311120102), we get a palindrome (323332233323).

The spelling of 201021113221 in words is "two hundred one billion, twenty-one million, one hundred thirteen thousand, two hundred twenty-one".