2123212040 has 32 divisors (see below), whose sum is σ = 4780658880. Its totient is φ = 848674752.

The previous prime is 2123212009. The next prime is 2123212043. The reversal of 2123212040 is 402123212.

It is not an unprimeable number, because it can be changed into a prime (2123212043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39539 + ... + 76221.

It is an arithmetic number, because the mean of its divisors is an integer number (149395590).

Almost surely, 2^2123212040 is an apocalyptic number.

2123212040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123212040 is an abundant number, since it is smaller than the sum of its proper divisors (2657446840).

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

2123212040 is a wasteful number, since it uses less digits than its factorization.

2123212040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38141 (or 38137 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2123212040 is about 46078.3250563646. The cubic root of 2123212040 is about 1285.2801177897.

Adding to 2123212040 its reverse (402123212), we get a palindrome (2525335252).

The spelling of 2123212040 in words is "two billion, one hundred twenty-three million, two hundred twelve thousand, forty".