2211378440000 has 70 divisors (see below), whose sum is σ = 5483499932394. Its totient is φ = 884551360000.

The previous prime is 2211378439973. The next prime is 2211378440057. The reversal of 2211378440000 is 448731122.

It can be written as a sum of positive squares in 5 ways, for example, as 931873592896 + 1279504847104 = 965336^2 + 1131152^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 27602231 + ... + 27682230.

Almost surely, 2^{2211378440000} is an apocalyptic number.

2211378440000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211378440000 is an abundant number, since it is smaller than the sum of its proper divisors (3272121492394).

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

2211378440000 is an frugal number, since it uses more digits than its factorization.

2211378440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55284493 (or 55284468 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 2211378440000 in words is "two trillion, two hundred eleven billion, three hundred seventy-eight million, four hundred forty thousand".