121121201120210 has 8 divisors (see below), whose sum is σ = 218018162016396. Its totient is φ = 48448480448080.

The previous prime is 121121201120147. The next prime is 121121201120303. The reversal of 121121201120210 is 12021102121121.

It can be written as a sum of positive squares in 2 ways, for example, as 110616102421561 + 10505098698649 = 10517419^2 + 3241157^2 .

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, 6056060056001 + ... + 6056060056020.

Almost surely, 2^{121121201120210} is an apocalyptic number.

121121201120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121201120210 is a deficient number, since it is larger than the sum of its proper divisors (96896960896186).

121121201120210 is a wasteful number, since it uses less digits than its factorization.

121121201120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12112120112028.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121121201120210 its reverse (12021102121121), we get a palindrome (133142303241331).

The spelling of 121121201120210 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred one million, one hundred twenty thousand, two hundred ten".