110202020121 has 4 divisors (see below), whose sum is σ = 146936026832. Its totient is φ = 73468013412.

The previous prime is 110202020087. The next prime is 110202020143. The reversal of 110202020121 is 121020202011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 110202020121 - 2¹⁸ = 110201757977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110202020097 and 110202020106.

It is not an unprimeable number, because it can be changed into a prime (110202022121) 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, 18367003351 + ... + 18367003356.

It is an arithmetic number, because the mean of its divisors is an integer number (36734006708).

Almost surely, 2^110202020121 is an apocalyptic number.

It is an amenable number.

110202020121 is a deficient number, since it is larger than the sum of its proper divisors (36734006711).

110202020121 is an equidigital number, since it uses as much as digits as its factorization.

110202020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36734006710.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 110202020121 its reverse (121020202011), we get a palindrome (231222222132).

The spelling of 110202020121 in words is "one hundred ten billion, two hundred two million, twenty thousand, one hundred twenty-one".