1212100100211 has 96 divisors (see below), whose sum is σ = 2304691619328. Its totient is φ = 555955868160.

The previous prime is 1212100100209. The next prime is 1212100100227. The reversal of 1212100100211 is 1120010012121.

It is not a de Polignac number, because 1212100100211 - 2¹ = 1212100100209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212100100201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 770026 + ... + 1736991.

It is an arithmetic number, because the mean of its divisors is an integer number (24007204368).

Almost surely, 2^{1212100100211} is an apocalyptic number.

1212100100211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212100100211 is a deficient number, since it is larger than the sum of its proper divisors (1092591519117).

1212100100211 is a wasteful number, since it uses less digits than its factorization.

1212100100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507081 (or 2507074 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1212100100211 its reverse (1120010012121), we get a palindrome (2332110112332).

The spelling of 1212100100211 in words is "one trillion, two hundred twelve billion, one hundred million, one hundred thousand, two hundred eleven".