1231121301102 has 256 divisors, whose sum is σ = 3464294400000. Its totient is φ = 314790053760.

The previous prime is 1231121301083. The next prime is 1231121301103. The reversal of 1231121301102 is 2011031211321.

1231121301102 is a `hidden beast` number, since 1 + 231 + 121 + 301 + 10 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231121301103) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 114634849 + ... + 114645587.

It is an arithmetic number, because the mean of its divisors is an integer number (13532400000).

Almost surely, 2^{1231121301102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231121301102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1732147200000).

1231121301102 is an abundant number, since it is smaller than the sum of its proper divisors (2233173098898).

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

1231121301102 is a wasteful number, since it uses less digits than its factorization.

1231121301102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11196 (or 11190 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1231121301102 its reverse (2011031211321), we get a palindrome (3242152512423).

The spelling of 1231121301102 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-one million, three hundred one thousand, one hundred two".