2021001002122 has 8 divisors (see below), whose sum is σ = 3113433976356. Its totient is φ = 983189676672.

The previous prime is 2021001002039. The next prime is 2021001002171. The reversal of 2021001002122 is 2212001001202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1987251270601 + 33749731521 = 1409699^2 + 183711^2 .

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

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, 13655412103 + ... + 13655412250.

Almost surely, 2^{2021001002122} is an apocalyptic number.

2021001002122 is a deficient number, since it is larger than the sum of its proper divisors (1092432974234).

2021001002122 is a wasteful number, since it uses less digits than its factorization.

2021001002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27310824392.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2021001002122 its reverse (2212001001202), we get a palindrome (4233002003324).

The spelling of 2021001002122 in words is "two trillion, twenty-one billion, one million, two thousand, one hundred twenty-two".