121442210 has 16 divisors (see below), whose sum is σ = 218721600. Its totient is φ = 48548976.

The previous prime is 121442201. The next prime is 121442213. The reversal of 121442210 is 12244121.

It is not an unprimeable number, because it can be changed into a prime (121442213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31361 + ... + 35019.

It is an arithmetic number, because the mean of its divisors is an integer number (13670100).

Almost surely, 2^121442210 is an apocalyptic number.

121442210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121442210 is a deficient number, since it is larger than the sum of its proper divisors (97279390).

121442210 is a wasteful number, since it uses less digits than its factorization.

121442210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6985.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121442210 is about 11020.0821231060. The cubic root of 121442210 is about 495.2105488004.

Adding to 121442210 its reverse (12244121), we get a palindrome (133686331).

The spelling of 121442210 in words is "one hundred twenty-one million, four hundred forty-two thousand, two hundred ten".