1210100001210 has 48 divisors (see below), whose sum is σ = 3247752268800. Its totient is φ = 312283870560.

The previous prime is 1210100001133. The next prime is 1210100001233. The reversal of 1210100001210 is 121000010121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1210100001192 and 1210100001201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216861010 + ... + 216866589.

It is an arithmetic number, because the mean of its divisors is an integer number (67661505600).

Almost surely, 2^{1210100001210} is an apocalyptic number.

1210100001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210100001210 is an abundant number, since it is smaller than the sum of its proper divisors (2037652267590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1210100001210 is a wasteful number, since it uses less digits than its factorization.

1210100001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433727643 (or 433727640 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1210100001210 its reverse (121000010121), we get a palindrome (1331100011331).

The spelling of 1210100001210 in words is "one trillion, two hundred ten billion, one hundred million, one thousand, two hundred ten".