12141859821 has 32 divisors (see below), whose sum is σ = 20349063168. Its totient is φ = 6268224960.

The previous prime is 12141859813. The next prime is 12141859823. The reversal of 12141859821 is 12895814121.

It is a happy number.

It is not a de Polignac number, because 12141859821 - 2³ = 12141859813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12141859823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 460315 + ... + 485976.

It is an arithmetic number, because the mean of its divisors is an integer number (635908224).

Almost surely, 2^12141859821 is an apocalyptic number.

It is an amenable number.

12141859821 is a deficient number, since it is larger than the sum of its proper divisors (8207203347).

12141859821 is a wasteful number, since it uses less digits than its factorization.

12141859821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946361.

The product of its digits is 46080, while the sum is 42.

The spelling of 12141859821 in words is "twelve billion, one hundred forty-one million, eight hundred fifty-nine thousand, eight hundred twenty-one".