1211101100210 has 8 divisors (see below), whose sum is σ = 2179981980396. Its totient is φ = 484440440080.

The previous prime is 1211101100177. The next prime is 1211101100219. The reversal of 1211101100210 is 120011011121.

It can be written as a sum of positive squares in 2 ways, for example, as 1116008426569 + 95092673641 = 1056413^2 + 308371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1211101100191 and 1211101100200.

It is not an unprimeable number, because it can be changed into a prime (1211101100219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60555055001 + ... + 60555055020.

Almost surely, 2^{1211101100210} is an apocalyptic number.

1211101100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211101100210 is a deficient number, since it is larger than the sum of its proper divisors (968880880186).

1211101100210 is a wasteful number, since it uses less digits than its factorization.

1211101100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121110110028.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1211101100210 its reverse (120011011121), we get a palindrome (1331112111331).

The spelling of 1211101100210 in words is "one trillion, two hundred eleven billion, one hundred one million, one hundred thousand, two hundred ten".