222131112101 has 4 divisors (see below), whose sum is σ = 225772605804. Its totient is φ = 218489618400.

The previous prime is 222131112029. The next prime is 222131112103. The reversal of 222131112101 is 101211131222.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 115600680001 + 106530432100 = 340001^2 + 326390^2 .

It is a cyclic number.

It is not a de Polignac number, because 222131112101 - 2¹⁸ = 222130849957 is a prime.

It is a super-3 number, since 3×222131112101³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222131112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222131112103) 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, 1820746760 + ... + 1820746881.

It is an arithmetic number, because the mean of its divisors is an integer number (56443151451).

Almost surely, 2^222131112101 is an apocalyptic number.

It is an amenable number.

222131112101 is a deficient number, since it is larger than the sum of its proper divisors (3641493703).

222131112101 is an equidigital number, since it uses as much as digits as its factorization.

222131112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641493702.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 222131112101 its reverse (101211131222), we get a palindrome (323342243323).

The spelling of 222131112101 in words is "two hundred twenty-two billion, one hundred thirty-one million, one hundred twelve thousand, one hundred one".