231022101222 has 96 divisors (see below), whose sum is σ = 578333343744. Its totient is φ = 65870380800.

The previous prime is 231022101217. The next prime is 231022101253. The reversal of 231022101222 is 222101220132.

231022101222 is a `hidden beast` number, since 231 + 0 + 2 + 210 + 1 + 222 = 666.

231022101222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231022101222² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 231022101195 and 231022101204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16254043 + ... + 16268249.

It is an arithmetic number, because the mean of its divisors is an integer number (6024305664).

Almost surely, 2^231022101222 is an apocalyptic number.

231022101222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 231022101222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289166671872).

231022101222 is an abundant number, since it is smaller than the sum of its proper divisors (347311242522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231022101222 is a wasteful number, since it uses less digits than its factorization.

231022101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19074 (or 19071 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 231022101222 its reverse (222101220132), we get a palindrome (453123321354).

The spelling of 231022101222 in words is "two hundred thirty-one billion, twenty-two million, one hundred one thousand, two hundred twenty-two".