2111211000000 has 392 divisors, whose sum is σ = 7758211631120. Its totient is φ = 562982400000.

The previous prime is 2111210999993. The next prime is 2111211000023. The reversal of 2111211000000 is 1121112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 26960904 + ... + 27039096.

Almost surely, 2^{2111211000000} is an apocalyptic number.

2111211000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111211000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3879105815560).

2111211000000 is an abundant number, since it is smaller than the sum of its proper divisors (5647000631120).

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

2111211000000 is an frugal number, since it uses more digits than its factorization.

2111211000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78244 (or 78203 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2111211000000 its reverse (1121112), we get a palindrome (2111212121112).

It can be divided in two parts, 211121 and 1000000, that added together give a palindrome (1211121).

The spelling of 2111211000000 in words is "two trillion, one hundred eleven billion, two hundred eleven million", and thus it is an aban number.