1211200000210 has 16 divisors (see below), whose sum is σ = 2201745744792. Its totient is φ = 479683168000.

The previous prime is 1211200000207. The next prime is 1211200000211. The reversal of 1211200000210 is 120000021121.

It can be written as a sum of positive squares in 4 ways, for example, as 1043059817809 + 168140182401 = 1021303^2 + 410049^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1211200000211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599602951 + ... + 599604970.

Almost surely, 2^{1211200000210} is an apocalyptic number.

1211200000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211200000210 is a deficient number, since it is larger than the sum of its proper divisors (990545744582).

1211200000210 is a wasteful number, since it uses less digits than its factorization.

1211200000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199208029.

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

Adding to 1211200000210 its reverse (120000021121), we get a palindrome (1331200021331).

The spelling of 1211200000210 in words is "one trillion, two hundred eleven billion, two hundred million, two hundred ten", and thus it is an aban number.