2021001102122 has 4 divisors (see below), whose sum is σ = 3031501653186. Its totient is φ = 1010500551060.

The previous prime is 2021001102089. The next prime is 2021001102137. The reversal of 2021001102122 is 2212011001202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1155541151521 + 865459950601 = 1074961^2 + 930301^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2021001102097 and 2021001102106.

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 as a sum of consecutive naturals, namely, 505250275529 + ... + 505250275532.

Almost surely, 2^{2021001102122} is an apocalyptic number.

2021001102122 is a deficient number, since it is larger than the sum of its proper divisors (1010500551064).

2021001102122 is a wasteful number, since it uses less digits than its factorization.

2021001102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010500551063.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021001102122 its reverse (2212011001202), we get a palindrome (4233012103324).

The spelling of 2021001102122 in words is "two trillion, twenty-one billion, one million, one hundred two thousand, one hundred twenty-two".