2121023124100 has 72 divisors (see below), whose sum is σ = 4932537922368. Its totient is φ = 789588835200.

The previous prime is 2121023124089. The next prime is 2121023124109. The reversal of 2121023124100 is 14213201212.

It is not an unprimeable number, because it can be changed into a prime (2121023124109) 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, 12376846 + ... + 12547045.

It is an arithmetic number, because the mean of its divisors is an integer number (68507471144).

Almost surely, 2^{2121023124100} is an apocalyptic number.

2121023124100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121023124100 is an abundant number, since it is smaller than the sum of its proper divisors (2811514798268).

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

2121023124100 is a wasteful number, since it uses less digits than its factorization.

2121023124100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24923965 (or 24923958 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2121023124100 its reverse (14213201212), we get a palindrome (2135236325312).

The spelling of 2121023124100 in words is "two trillion, one hundred twenty-one billion, twenty-three million, one hundred twenty-four thousand, one hundred".