121443220210 has 32 divisors (see below), whose sum is σ = 235496302272. Its totient is φ = 44824708800.

The previous prime is 121443220183. The next prime is 121443220237. The reversal of 121443220210 is 12022344121.

It is an interprime number because it is at equal distance from previous prime (121443220183) and next prime (121443220237).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206797 + ... + 534463.

It is an arithmetic number, because the mean of its divisors is an integer number (7359259446).

Almost surely, 2^121443220210 is an apocalyptic number.

121443220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121443220210 is a deficient number, since it is larger than the sum of its proper divisors (114053082062).

121443220210 is a wasteful number, since it uses less digits than its factorization.

121443220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330538.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 121443220210 its reverse (12022344121), we get a palindrome (133465564331).

The spelling of 121443220210 in words is "one hundred twenty-one billion, four hundred forty-three million, two hundred twenty thousand, two hundred ten".