110201212120021 has 4 divisors (see below), whose sum is σ = 120219504130944. Its totient is φ = 100182920109100.

The previous prime is 110201212120019. The next prime is 110201212120033. The reversal of 110201212120021 is 120021212102011.

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 110201212120021 - 2¹ = 110201212120019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110201212119977 and 110201212120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110201212120061) 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, 5009146005445 + ... + 5009146005466.

It is an arithmetic number, because the mean of its divisors is an integer number (30054876032736).

Almost surely, 2^{110201212120021} is an apocalyptic number.

110201212120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110201212120021 is a deficient number, since it is larger than the sum of its proper divisors (10018292010923).

110201212120021 is a wasteful number, since it uses less digits than its factorization.

110201212120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10018292010922.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 110201212120021 its reverse (120021212102011), we get a palindrome (230222424222032).

The spelling of 110201212120021 in words is "one hundred ten trillion, two hundred one billion, two hundred twelve million, one hundred twenty thousand, twenty-one".