2121022100232 has 384 divisors, whose sum is σ = 7277311641600. Its totient is φ = 543768090624.

The previous prime is 2121022100221. The next prime is 2121022100279. The reversal of 2121022100232 is 2320012201212.

2121022100232 is a `hidden beast` number, since 2 + 1 + 210 + 221 + 0 + 0 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 60481119 + ... + 60516177.

It is an arithmetic number, because the mean of its divisors is an integer number (18951332400).

Almost surely, 2^{2121022100232} 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 2121022100232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3638655820800).

2121022100232 is an abundant number, since it is smaller than the sum of its proper divisors (5156289541368).

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

2121022100232 is a wasteful number, since it uses less digits than its factorization.

2121022100232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35425 (or 35418 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2121022100232 its reverse (2320012201212), we get a palindrome (4441034301444).

The spelling of 2121022100232 in words is "two trillion, one hundred twenty-one billion, twenty-two million, one hundred thousand, two hundred thirty-two".