212211001121100 has 72 divisors (see below), whose sum is σ = 613999236356688. Its totient is φ = 56589409228800.

The previous prime is 212211001121051. The next prime is 212211001121113. The reversal of 212211001121100 is 1121100112212.

It is a happy number.

It is a super-3 number, since 3×212211001121100³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212211001121100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102904120 + ... + 104946080.

Almost surely, 2^{212211001121100} is an apocalyptic number.

212211001121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212211001121100 is an abundant number, since it is smaller than the sum of its proper divisors (401788235235588).

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

212211001121100 is a wasteful number, since it uses less digits than its factorization.

212211001121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388395 (or 2388388 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212211001121100 its reverse (1121100112212), we get a palindrome (213332101233312).

The spelling of 212211001121100 in words is "two hundred twelve trillion, two hundred eleven billion, one million, one hundred twenty-one thousand, one hundred".