12101222331 has 24 divisors (see below), whose sum is σ = 19583966064. Its totient is φ = 7135853760.

The previous prime is 12101222311. The next prime is 12101222407. The reversal of 12101222331 is 13322210121.

12101222331 is a `hidden beast` number, since 1 + 210 + 122 + 2 + 331 = 666.

It is not a de Polignac number, because 12101222331 - 2¹⁵ = 12101189563 is a prime.

It is a super-2 number, since 2×12101222331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12101222311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1648156 + ... + 1655481.

It is an arithmetic number, because the mean of its divisors is an integer number (815998586).

Almost surely, 2^12101222331 is an apocalyptic number.

12101222331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12101222331 is a deficient number, since it is larger than the sum of its proper divisors (7482743733).

12101222331 is a wasteful number, since it uses less digits than its factorization.

12101222331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303691 (or 3303688 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12101222331 its reverse (13322210121), we get a palindrome (25423432452).

It can be divided in two parts, 12101 and 222331, that added together give a palindrome (234432).

The spelling of 12101222331 in words is "twelve billion, one hundred one million, two hundred twenty-two thousand, three hundred thirty-one".