121111201210 has 8 divisors (see below), whose sum is σ = 218000162196. Its totient is φ = 48444480480.

The previous prime is 121111201207. The next prime is 121111201229. The reversal of 121111201210 is 12102111121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 111046898169 + 10064303041 = 333237^2 + 100321^2 .

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, 6055560051 + ... + 6055560070.

Almost surely, 2^121111201210 is an apocalyptic number.

121111201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111201210 is a deficient number, since it is larger than the sum of its proper divisors (96888960986).

121111201210 is a wasteful number, since it uses less digits than its factorization.

121111201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12111120128.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121111201210 its reverse (12102111121), we get a palindrome (133213312331).

The spelling of 121111201210 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred one thousand, two hundred ten".