2100021202122 has 8 divisors (see below), whose sum is σ = 4200042404256. Its totient is φ = 700007067372.

The previous prime is 2100021202093. The next prime is 2100021202171. The reversal of 2100021202122 is 2212021200012.

It is a sphenic number, since it is the product of 3 distinct primes.

2100021202122 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175001766838 + ... + 175001766849.

It is an arithmetic number, because the mean of its divisors is an integer number (525005300532).

Almost surely, 2^{2100021202122} is an apocalyptic number.

2100021202122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2100021202122 is a wasteful number, since it uses less digits than its factorization.

2100021202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350003533692.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2100021202122 its reverse (2212021200012), we get a palindrome (4312042402134).

The spelling of 2100021202122 in words is "two trillion, one hundred billion, twenty-one million, two hundred two thousand, one hundred twenty-two".