1212111100210 has 64 divisors (see below), whose sum is σ = 2270786918400. Its totient is φ = 465276268800.

The previous prime is 1212111100199. The next prime is 1212111100247. The reversal of 1212111100210 is 120011112121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110800921 + ... + 110811859.

It is an arithmetic number, because the mean of its divisors is an integer number (35481045600).

Almost surely, 2^{1212111100210} is an apocalyptic number.

1212111100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212111100210 is a deficient number, since it is larger than the sum of its proper divisors (1058675818190).

1212111100210 is a wasteful number, since it uses less digits than its factorization.

1212111100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13267.

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

Adding to 1212111100210 its reverse (120011112121), we get a palindrome (1332122212331).

The spelling of 1212111100210 in words is "one trillion, two hundred twelve billion, one hundred eleven million, one hundred thousand, two hundred ten".