1231101221122 has 8 divisors (see below), whose sum is σ = 1846796354172. Its totient is φ = 615502436400.

The previous prime is 1231101221111. The next prime is 1231101221153. The reversal of 1231101221122 is 2211221011321.

It can be written as a sum of positive squares in 2 ways, for example, as 1212485074641 + 18616146481 = 1101129^2 + 136441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1231101221122² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231101221122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24055129 + ... + 24106252.

Almost surely, 2^{1231101221122} is an apocalyptic number.

1231101221122 is a deficient number, since it is larger than the sum of its proper divisors (615695133050).

1231101221122 is a wasteful number, since it uses less digits than its factorization.

1231101221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48174164.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1231101221122 its reverse (2211221011321), we get a palindrome (3442322232443).

The spelling of 1231101221122 in words is "one trillion, two hundred thirty-one billion, one hundred one million, two hundred twenty-one thousand, one hundred twenty-two".