1211202001210 has 16 divisors (see below), whose sum is σ = 2180282439816. Its totient is φ = 484454392128.

The previous prime is 1211202001199. The next prime is 1211202001211. The reversal of 1211202001210 is 121002021121.

It can be written as a sum of positive squares in 4 ways, for example, as 884602324089 + 326599677121 = 940533^2 + 571489^2 .

It is not an unprimeable number, because it can be changed into a prime (1211202001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3107877 + ... + 3475816.

Almost surely, 2^{1211202001210} is an apocalyptic number.

1211202001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211202001210 is a deficient number, since it is larger than the sum of its proper divisors (969080438606).

1211202001210 is a wasteful number, since it uses less digits than its factorization.

1211202001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6602097.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211202001210 its reverse (121002021121), we get a palindrome (1332204022331).

The spelling of 1211202001210 in words is "one trillion, two hundred eleven billion, two hundred two million, one thousand, two hundred ten".