122110021 has 8 divisors (see below), whose sum is σ = 133949088. Its totient is φ = 110394000.

The previous prime is 122109991. The next prime is 122110057. The reversal of 122110021 is 120011221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122110021 - 2¹⁷ = 121978949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122110081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28675 + ... + 32656.

It is an arithmetic number, because the mean of its divisors is an integer number (16743636).

Almost surely, 2^122110021 is an apocalyptic number.

122110021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122110021 is a deficient number, since it is larger than the sum of its proper divisors (11839067).

122110021 is a wasteful number, since it uses less digits than its factorization.

122110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61523.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 122110021 is about 11050.3403115017. The cubic root of 122110021 is about 496.1166113373.

Adding to 122110021 its reverse (120011221), we get a palindrome (242121242).

The spelling of 122110021 in words is "one hundred twenty-two million, one hundred ten thousand, twenty-one".