201012221022221 has 16 divisors (see below), whose sum is σ = 232045465292160. Its totient is φ = 170558907508800.

The previous prime is 201012221022169. The next prime is 201012221022269. The reversal of 201012221022221 is 122220122210102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201012221022221 is a prime.

It is a super-2 number, since 2×201012221022221² (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 = 201012221022193 and 201012221022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012221022281) 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, 22302551 + ... + 29990468.

It is an arithmetic number, because the mean of its divisors is an integer number (14502841580760).

Almost surely, 2^{201012221022221} is an apocalyptic number.

It is an amenable number.

201012221022221 is a deficient number, since it is larger than the sum of its proper divisors (31033244269939).

201012221022221 is a wasteful number, since it uses less digits than its factorization.

201012221022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52298564.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201012221022221 its reverse (122220122210102), we get a palindrome (323232343232323).

The spelling of 201012221022221 in words is "two hundred one trillion, twelve billion, two hundred twenty-one million, twenty-two thousand, two hundred twenty-one".