2102202001121 has 4 divisors (see below), whose sum is σ = 2102264213700. Its totient is φ = 2102139788544.

The previous prime is 2102202001117. The next prime is 2102202001139. The reversal of 2102202001121 is 1211002022012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1358882135521 + 743319865600 = 1165711^2 + 862160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102202001121 - 2² = 2102202001117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2102202001096 and 2102202001105.

It is not an unprimeable number, because it can be changed into a prime (2102202001421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31055576 + ... + 31123193.

It is an arithmetic number, because the mean of its divisors is an integer number (525566053425).

Almost surely, 2^{2102202001121} is an apocalyptic number.

It is an amenable number.

2102202001121 is a deficient number, since it is larger than the sum of its proper divisors (62212579).

2102202001121 is an equidigital number, since it uses as much as digits as its factorization.

2102202001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62212578.

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

Adding to 2102202001121 its reverse (1211002022012), we get a palindrome (3313204023133).

The spelling of 2102202001121 in words is "two trillion, one hundred two billion, two hundred two million, one thousand, one hundred twenty-one".