201222221331 has 4 divisors (see below), whose sum is σ = 268296295112. Its totient is φ = 134148147552.

The previous prime is 201222221329. The next prime is 201222221339. The reversal of 201222221331 is 133122222102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201222221331 - 2¹ = 201222221329 is a prime.

It is a super-2 number, since 2×201222221331² (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 = 201222221298 and 201222221307.

It is not an unprimeable number, because it can be changed into a prime (201222221339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33537036886 + ... + 33537036891.

It is an arithmetic number, because the mean of its divisors is an integer number (67074073778).

Almost surely, 2^201222221331 is an apocalyptic number.

201222221331 is a deficient number, since it is larger than the sum of its proper divisors (67074073781).

201222221331 is an equidigital number, since it uses as much as digits as its factorization.

201222221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67074073780.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 201222221331 its reverse (133122222102), we get a palindrome (334344443433).

The spelling of 201222221331 in words is "two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, three hundred thirty-one".