2121424020144 has 120 divisors (see below), whose sum is σ = 6974985103632. Its totient is φ = 593405314560.

The previous prime is 2121424020139. The next prime is 2121424020169. The reversal of 2121424020144 is 4410204241212.

2121424020144 is a `hidden beast` number, since 2 + 1 + 214 + 2 + 402 + 0 + 1 + 44 = 666.

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, 51490287 + ... + 51531470.

Almost surely, 2^{2121424020144} is an apocalyptic number.

2121424020144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2121424020144 is an abundant number, since it is smaller than the sum of its proper divisors (4853561083488).

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

2121424020144 is a wasteful number, since it uses less digits than its factorization.

2121424020144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103021795 (or 103021786 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 2121424020144 its reverse (4410204241212), we get a palindrome (6531628261356).

The spelling of 2121424020144 in words is "two trillion, one hundred twenty-one billion, four hundred twenty-four million, twenty thousand, one hundred forty-four".