100121412342 has 32 divisors (see below), whose sum is σ = 240893625600. Its totient is φ = 27100532448.

The previous prime is 100121412319. The next prime is 100121412343. The reversal of 100121412342 is 243214121001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121412343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62731917 + ... + 62733512.

It is an arithmetic number, because the mean of its divisors is an integer number (7527925800).

Almost surely, 2^100121412342 is an apocalyptic number.

100121412342 is an abundant number, since it is smaller than the sum of its proper divisors (140772213258).

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

100121412342 is a wasteful number, since it uses less digits than its factorization.

100121412342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125465460.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 100121412342 its reverse (243214121001), we get a palindrome (343335533343).

The spelling of 100121412342 in words is "one hundred billion, one hundred twenty-one million, four hundred twelve thousand, three hundred forty-two".