1212101210 has 16 divisors (see below), whose sum is σ = 2182269600. Its totient is φ = 484732176.

The previous prime is 1212101201. The next prime is 1212101237. The reversal of 1212101210 is 121012121.

1212101210 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1212101191 and 1212101200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45881 + ... + 67299.

It is an arithmetic number, because the mean of its divisors is an integer number (136391850).

Almost surely, 2^1212101210 is an apocalyptic number.

1212101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212101210 is a deficient number, since it is larger than the sum of its proper divisors (970168390).

1212101210 is a wasteful number, since it uses less digits than its factorization.

1212101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27085.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1212101210 is about 34815.2439313586. The cubic root of 1212101210 is about 1066.2186993721.

Adding to 1212101210 its reverse (121012121), we get a palindrome (1333113331).

The spelling of 1212101210 in words is "one billion, two hundred twelve million, one hundred one thousand, two hundred ten".