2212222140 has 36 divisors (see below), whose sum is σ = 6710407704. Its totient is φ = 589925856.

The previous prime is 2212222139. The next prime is 2212222151. The reversal of 2212222140 is 412222122.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6144882 + ... + 6145241.

It is an arithmetic number, because the mean of its divisors is an integer number (186400214).

Almost surely, 2^2212222140 is an apocalyptic number.

2212222140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212222140 is an abundant number, since it is smaller than the sum of its proper divisors (4498185564).

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

2212222140 is a wasteful number, since it uses less digits than its factorization.

2212222140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12290138 (or 12290133 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2212222140 is about 47034.2655943515. The cubic root of 2212222140 is about 1302.9954869129.

Subtracting from 2212222140 its sum of digits (18), we obtain a palindrome (2212222122).

Adding to 2212222140 its reverse (412222122), we get a palindrome (2624444262).

The spelling of 2212222140 in words is "two billion, two hundred twelve million, two hundred twenty-two thousand, one hundred forty".