2021102102122 has 8 divisors (see below), whose sum is σ = 3031677099396. Its totient is φ = 1010543068992.

The previous prime is 2021102102059. The next prime is 2021102102197. The reversal of 2021102102122 is 2212012011202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2015806483681 + 5295618441 = 1419791^2 + 72771^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2021102102096 and 2021102102105.

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, 3669343 + ... + 4184050.

Almost surely, 2^{2021102102122} is an apocalyptic number.

2021102102122 is a deficient number, since it is larger than the sum of its proper divisors (1010574997274).

2021102102122 is a wasteful number, since it uses less digits than its factorization.

2021102102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7982072.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021102102122 its reverse (2212012011202), we get a palindrome (4233114113324).

The spelling of 2021102102122 in words is "two trillion, twenty-one billion, one hundred two million, one hundred two thousand, one hundred twenty-two".