21347833329812 has 12 divisors (see below), whose sum is σ = 40754954538816. Its totient is φ = 9703560604440.

The previous prime is 21347833329811. The next prime is 21347833329817. The reversal of 21347833329812 is 21892333874312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21347833329811) 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, 242589015068 + ... + 242589015155.

It is an arithmetic number, because the mean of its divisors is an integer number (3396246211568).

Almost surely, 2^{21347833329812} is an apocalyptic number.

21347833329812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21347833329812 is a deficient number, since it is larger than the sum of its proper divisors (19407121209004).

21347833329812 is a wasteful number, since it uses less digits than its factorization.

21347833329812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485178030238 (or 485178030236 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 56.

The spelling of 21347833329812 in words is "twenty-one trillion, three hundred forty-seven billion, eight hundred thirty-three million, three hundred twenty-nine thousand, eight hundred twelve".