1210122221 has 8 divisors (see below), whose sum is σ = 1508723904. Its totient is φ = 942952320.

The previous prime is 1210122197. The next prime is 1210122229. The reversal of 1210122221 is 1222210121.

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 1210122221 - 2⁶ = 1210122157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210122196 and 1210122205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210122229) 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 7 ways as a sum of consecutive naturals, for example, 7857860 + ... + 7858013.

It is an arithmetic number, because the mean of its divisors is an integer number (188590488).

Almost surely, 2^1210122221 is an apocalyptic number.

1210122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210122221 is a deficient number, since it is larger than the sum of its proper divisors (298601683).

1210122221 is a wasteful number, since it uses less digits than its factorization.

1210122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15715891.

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

The square root of 1210122221 is about 34786.8110208452. The cubic root of 1210122221 is about 1065.6381140631.

Adding to 1210122221 its reverse (1222210121), we get a palindrome (2432332342).

The spelling of 1210122221 in words is "one billion, two hundred ten million, one hundred twenty-two thousand, two hundred twenty-one".