1212100000210 has 32 divisors (see below), whose sum is σ = 2388534028992. Its totient is φ = 439206156480.

The previous prime is 1212100000159. The next prime is 1212100000247. The reversal of 1212100000210 is 120000012121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19437229 + ... + 19499488.

It is an arithmetic number, because the mean of its divisors is an integer number (74641688406).

Almost surely, 2^{1212100000210} is an apocalyptic number.

1212100000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212100000210 is a deficient number, since it is larger than the sum of its proper divisors (1176434028782).

1212100000210 is a wasteful number, since it uses less digits than its factorization.

1212100000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38937018.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1212100000210 its reverse (120000012121), we get a palindrome (1332100012331).

The spelling of 1212100000210 in words is "one trillion, two hundred twelve billion, one hundred million, two hundred ten", and thus it is an aban number.