2412155921 has 8 divisors (see below), whose sum is σ = 2759013504. Its totient is φ = 2065864320.

The previous prime is 2412155873. The next prime is 2412155923. The reversal of 2412155921 is 1295512142.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2412155921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2412155923) 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, 132320 + ... + 149441.

It is an arithmetic number, because the mean of its divisors is an integer number (344876688).

Almost surely, 2^2412155921 is an apocalyptic number.

It is an amenable number.

2412155921 is a deficient number, since it is larger than the sum of its proper divisors (346857583).

2412155921 is a wasteful number, since it uses less digits than its factorization.

2412155921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282991.

The product of its digits is 7200, while the sum is 32.

The square root of 2412155921 is about 49113.7040040761. The cubic root of 2412155921 is about 1341.1225317580.

The spelling of 2412155921 in words is "two billion, four hundred twelve million, one hundred fifty-five thousand, nine hundred twenty-one".