211222110011100 has 72 divisors (see below), whose sum is σ = 621494208491520. Its totient is φ = 55371219794880.

The previous prime is 211222110011089. The next prime is 211222110011111. The reversal of 211222110011100 is 1110011222112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (211222110011089) and next prime (211222110011111).

It is a super-2 number, since 2×211222110011100² (a number of 29 digits) contains 22 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 211222110011100.

It is a congruent number.

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, 5966708572 + ... + 5966743971.

Almost surely, 2^{211222110011100} is an apocalyptic number.

211222110011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222110011100 is an abundant number, since it is smaller than the sum of its proper divisors (410272098480420).

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

211222110011100 is a wasteful number, since it uses less digits than its factorization.

211222110011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11933452619 (or 11933452612 counting only the distinct ones).

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

Adding to 211222110011100 its reverse (1110011222112), we get a palindrome (212332121233212).

The spelling of 211222110011100 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred ten million, eleven thousand, one hundred".