110202212021 has 4 divisors (see below), whose sum is σ = 120220594944. Its totient is φ = 100183829100.

The previous prime is 110202212009. The next prime is 110202212023. The reversal of 110202212021 is 120212202011.

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 a cyclic number.

It is not a de Polignac number, because 110202212021 - 2¹⁸ = 110201949877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110202211987 and 110202212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110202212023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5009191445 + ... + 5009191466.

It is an arithmetic number, because the mean of its divisors is an integer number (30055148736).

Almost surely, 2^110202212021 is an apocalyptic number.

110202212021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110202212021 is a deficient number, since it is larger than the sum of its proper divisors (10018382923).

110202212021 is a wasteful number, since it uses less digits than its factorization.

110202212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10018382922.

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

Adding to 110202212021 its reverse (120212202011), we get a palindrome (230414414032).

It can be divided in two parts, 110202 and 212021, that added together give a palindrome (322223).

The spelling of 110202212021 in words is "one hundred ten billion, two hundred two million, two hundred twelve thousand, twenty-one".