3012121240 has 16 divisors (see below), whose sum is σ = 6777272880. Its totient is φ = 1204848480.

The previous prime is 3012121223. The next prime is 3012121241. The reversal of 3012121240 is 421212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012121241) 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, 37651476 + ... + 37651555.

It is an arithmetic number, because the mean of its divisors is an integer number (423579555).

Almost surely, 2^3012121240 is an apocalyptic number.

It is an amenable number.

3012121240 is an abundant number, since it is smaller than the sum of its proper divisors (3765151640).

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

3012121240 is a wasteful number, since it uses less digits than its factorization.

3012121240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75303042 (or 75303038 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 3012121240 is about 54882.7954827376. The cubic root of 3012121240 is about 1444.1893882243.

Adding to 3012121240 its reverse (421212103), we get a palindrome (3433333343).

The spelling of 3012121240 in words is "three billion, twelve million, one hundred twenty-one thousand, two hundred forty".