110021102002121 has 4 divisors (see below), whose sum is σ = 110021808830100. Its totient is φ = 110020395174144.

The previous prime is 110021102002079. The next prime is 110021102002171. The reversal of 110021102002121 is 121200201120011.

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 70966539098896 + 39054562903225 = 8424164^2 + 6249365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110021102002121 is a prime.

It is a super-2 number, since 2×110021102002121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110021102002096 and 110021102002105.

It is not an unprimeable number, because it can be changed into a prime (110021102002171) 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, 353180456 + ... + 353491833.

It is an arithmetic number, because the mean of its divisors is an integer number (27505452207525).

Almost surely, 2^{110021102002121} is an apocalyptic number.

It is an amenable number.

110021102002121 is a deficient number, since it is larger than the sum of its proper divisors (706827979).

110021102002121 is an equidigital number, since it uses as much as digits as its factorization.

110021102002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706827978.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 110021102002121 its reverse (121200201120011), we get a palindrome (231221303122132).

The spelling of 110021102002121 in words is "one hundred ten trillion, twenty-one billion, one hundred two million, two thousand, one hundred twenty-one".