1221101230 has 8 divisors (see below), whose sum is σ = 2197982232. Its totient is φ = 488440488.

The previous prime is 1221101221. The next prime is 1221101251. The reversal of 1221101230 is 321011221.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1221101230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61055052 + ... + 61055071.

It is an arithmetic number, because the mean of its divisors is an integer number (274747779).

Almost surely, 2^1221101230 is an apocalyptic number.

1221101230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221101230 is a deficient number, since it is larger than the sum of its proper divisors (976881002).

1221101230 is a wasteful number, since it uses less digits than its factorization.

1221101230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122110130.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1221101230 is about 34944.2588989951. The cubic root of 1221101230 is about 1068.8511353742.

Adding to 1221101230 its reverse (321011221), we get a palindrome (1542112451).

Subtracting from 1221101230 its reverse (321011221), we obtain a palindrome (900090009).

The spelling of 1221101230 in words is "one billion, two hundred twenty-one million, one hundred one thousand, two hundred thirty".