2100021221022 has 8 divisors (see below), whose sum is σ = 4200042442056. Its totient is φ = 700007073672.

The previous prime is 2100021220993. The next prime is 2100021221033. The reversal of 2100021221022 is 2201221200012.

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

2100021221022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2100021220992 and 2100021221010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175001768413 + ... + 175001768424.

It is an arithmetic number, because the mean of its divisors is an integer number (525005305257).

Almost surely, 2^{2100021221022} is an apocalyptic number.

2100021221022 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.

2100021221022 is a wasteful number, since it uses less digits than its factorization.

2100021221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350003536842.

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

Adding to 2100021221022 its reverse (2201221200012), we get a palindrome (4301242421034).

The spelling of 2100021221022 in words is "two trillion, one hundred billion, twenty-one million, two hundred twenty-one thousand, twenty-two".