2122144540 has 12 divisors (see below), whose sum is σ = 4456503576. Its totient is φ = 848857808.

The previous prime is 2122144537. The next prime is 2122144547. The reversal of 2122144540 is 454412212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122144547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53053594 + ... + 53053633.

It is an arithmetic number, because the mean of its divisors is an integer number (371375298).

Almost surely, 2^2122144540 is an apocalyptic number.

2122144540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122144540 is an abundant number, since it is smaller than the sum of its proper divisors (2334359036).

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

2122144540 is a wasteful number, since it uses less digits than its factorization.

2122144540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106107236 (or 106107234 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2122144540 is about 46066.7400626526. The cubic root of 2122144540 is about 1285.0646790257.

Adding to 2122144540 its reverse (454412212), we get a palindrome (2576556752).

The spelling of 2122144540 in words is "two billion, one hundred twenty-two million, one hundred forty-four thousand, five hundred forty".