2011211211212 has 48 divisors (see below), whose sum is σ = 4272642964800. Its totient is φ = 808652961792.

The previous prime is 2011211211211. The next prime is 2011211211223. The reversal of 2011211211212 is 2121121121102.

It is a super-2 number, since 2×2011211211212² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (2011211211211) 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 15 ways as a sum of consecutive naturals, for example, 6600587 + ... + 6898562.

It is an arithmetic number, because the mean of its divisors is an integer number (89013395100).

Almost surely, 2^{2011211211212} is an apocalyptic number.

It is an amenable number.

2011211211212 is an abundant number, since it is smaller than the sum of its proper divisors (2261431753588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011211211212 is a wasteful number, since it uses less digits than its factorization.

2011211211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13499490 (or 13499488 counting only the distinct ones).

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

Adding to 2011211211212 its reverse (2121121121102), we get a palindrome (4132332332314).

The spelling of 2011211211212 in words is "two trillion, eleven billion, two hundred eleven million, two hundred eleven thousand, two hundred twelve".