2121008621148 has 144 divisors (see below), whose sum is σ = 5667209067520. Its totient is φ = 666998001792.

The previous prime is 2121008621089. The next prime is 2121008621203. The reversal of 2121008621148 is 8411268001212.

2121008621148 is a `hidden beast` number, since 2 + 1 + 2 + 10 + 0 + 8 + 621 + 14 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 183997761 + ... + 184009287.

Almost surely, 2^{2121008621148} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121008621148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2833604533760).

2121008621148 is an abundant number, since it is smaller than the sum of its proper divisors (3546200446372).

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

2121008621148 is a wasteful number, since it uses less digits than its factorization.

2121008621148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12656 (or 12651 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The spelling of 2121008621148 in words is "two trillion, one hundred twenty-one billion, eight million, six hundred twenty-one thousand, one hundred forty-eight".