110021011221 has 16 divisors (see below), whose sum is σ = 166988413440. Its totient is φ = 63780295920.

The previous prime is 110021011211. The next prime is 110021011223. The reversal of 110021011221 is 122110120011.

It is not a de Polignac number, because 110021011221 - 2⁵ = 110021011189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110021011197 and 110021011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110021011223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72476851 + ... + 72478368.

It is an arithmetic number, because the mean of its divisors is an integer number (10436775840).

Almost surely, 2^110021011221 is an apocalyptic number.

110021011221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110021011221 is a deficient number, since it is larger than the sum of its proper divisors (56967402219).

110021011221 is a wasteful number, since it uses less digits than its factorization.

110021011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144955256.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 110021011221 its reverse (122110120011), we get a palindrome (232131131232).

The spelling of 110021011221 in words is "one hundred ten billion, twenty-one million, eleven thousand, two hundred twenty-one".