11211212100212 has 12 divisors (see below), whose sum is σ = 20652232816320. Its totient is φ = 5310574152696.

The previous prime is 11211212100173. The next prime is 11211212100251. The reversal of 11211212100212 is 21200121211211.

It is an interprime number because it is at equal distance from previous prime (11211212100173) and next prime (11211212100251).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73757974268 + ... + 73757974419.

It is an arithmetic number, because the mean of its divisors is an integer number (1721019401360).

Almost surely, 2^{11211212100212} is an apocalyptic number.

It is an amenable number.

11211212100212 is a deficient number, since it is larger than the sum of its proper divisors (9441020716108).

11211212100212 is a wasteful number, since it uses less digits than its factorization.

11211212100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147515948710 (or 147515948708 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11211212100212 its reverse (21200121211211), we get a palindrome (32411333311423).

The spelling of 11211212100212 in words is "eleven trillion, two hundred eleven billion, two hundred twelve million, one hundred thousand, two hundred twelve".