130121230231100 has 72 divisors (see below), whose sum is σ = 284464968160128. Its totient is φ = 51661947499200.

The previous prime is 130121230231087. The next prime is 130121230231171. The reversal of 130121230231100 is 1132032121031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5901719 + ... + 17177681.

Almost surely, 2^{130121230231100} is an apocalyptic number.

130121230231100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130121230231100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142232484080064).

130121230231100 is an abundant number, since it is smaller than the sum of its proper divisors (154343737929028).

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

130121230231100 is a wasteful number, since it uses less digits than its factorization.

130121230231100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11276835 (or 11276828 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 130121230231100 its reverse (1132032121031), we get a palindrome (131253262352131).

The spelling of 130121230231100 in words is "one hundred thirty trillion, one hundred twenty-one billion, two hundred thirty million, two hundred thirty-one thousand, one hundred".