121123220210 has 8 divisors (see below), whose sum is σ = 218021796396. Its totient is φ = 48449288080.

The previous prime is 121123220209. The next prime is 121123220227. The reversal of 121123220210 is 12022321121.

It can be written as a sum of positive squares in 2 ways, for example, as 119891140009 + 1232080201 = 346253^2 + 35101^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6056161001 + ... + 6056161020.

Almost surely, 2^121123220210 is an apocalyptic number.

121123220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121123220210 is a deficient number, since it is larger than the sum of its proper divisors (96898576186).

121123220210 is a wasteful number, since it uses less digits than its factorization.

121123220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12112322028.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121123220210 its reverse (12022321121), we get a palindrome (133145541331).

The spelling of 121123220210 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred twenty thousand, two hundred ten".