121210222012210 has 8 divisors (see below), whose sum is σ = 218178399621996. Its totient is φ = 48484088804880.

The previous prime is 121210222012193. The next prime is 121210222012213. The reversal of 121210222012210 is 12210222012121.

It can be written as a sum of positive squares in 2 ways, for example, as 118509764115961 + 2700457896249 = 10886219^2 + 1643307^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121210222012213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6060511100601 + ... + 6060511100620.

Almost surely, 2^{121210222012210} is an apocalyptic number.

121210222012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210222012210 is a deficient number, since it is larger than the sum of its proper divisors (96968177609786).

121210222012210 is a wasteful number, since it uses less digits than its factorization.

121210222012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12121022201228.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121210222012210 its reverse (12210222012121), we get a palindrome (133420444024331).

The spelling of 121210222012210 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred twenty-two million, twelve thousand, two hundred ten".