2121001002122 has 8 divisors (see below), whose sum is σ = 3213001518372. Its totient is φ = 1050000496000.

The previous prime is 2121001002097. The next prime is 2121001002251. The reversal of 2121001002122 is 2212001001212.

It can be written as a sum of positive squares in 2 ways, for example, as 1699344280921 + 421656721201 = 1303589^2 + 649351^2 .

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 = 2121001002097 and 2121001002106.

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, 5250002279 + ... + 5250002682.

Almost surely, 2^{2121001002122} is an apocalyptic number.

2121001002122 is a deficient number, since it is larger than the sum of its proper divisors (1092000516250).

2121001002122 is a wasteful number, since it uses less digits than its factorization.

2121001002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10500005064.

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

Adding to 2121001002122 its reverse (2212001001212), we get a palindrome (4333002003334).

The spelling of 2121001002122 in words is "two trillion, one hundred twenty-one billion, one million, two thousand, one hundred twenty-two".