110021210010121 has 4 divisors (see below), whose sum is σ = 110021235316372. Its totient is φ = 110021184703872.

The previous prime is 110021210010109. The next prime is 110021210010137. The reversal of 110021210010121 is 121010012120011.

It is a happy number.

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 86019392312896 + 24001817697225 = 9274664^2 + 4899165^2 .

It is a cyclic number.

It is not a de Polignac number, because 110021210010121 - 2¹³ = 110021210001929 is a prime.

It is a super-2 number, since 2×110021210010121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110021210010821) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4288560 + ... + 15441313.

It is an arithmetic number, because the mean of its divisors is an integer number (27505308829093).

Almost surely, 2^{110021210010121} is an apocalyptic number.

It is an amenable number.

110021210010121 is a deficient number, since it is larger than the sum of its proper divisors (25306251).

110021210010121 is an equidigital number, since it uses as much as digits as its factorization.

110021210010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25306250.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 110021210010121 its reverse (121010012120011), we get a palindrome (231031222130132).

The spelling of 110021210010121 in words is "one hundred ten trillion, twenty-one billion, two hundred ten million, ten thousand, one hundred twenty-one".