21346106252 has 6 divisors (see below), whose sum is σ = 37355685948. Its totient is φ = 10673053124.

The previous prime is 21346106251. The next prime is 21346106273. The reversal of 21346106252 is 25260164312.

It is not an unprimeable number, because it can be changed into a prime (21346106251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2668263278 + ... + 2668263285.

It is an arithmetic number, because the mean of its divisors is an integer number (6225947658).

Almost surely, 2^21346106252 is an apocalyptic number.

It is an amenable number.

21346106252 is a deficient number, since it is larger than the sum of its proper divisors (16009579696).

21346106252 is a wasteful number, since it uses less digits than its factorization.

21346106252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336526567 (or 5336526565 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 21346106252 in words is "twenty-one billion, three hundred forty-six million, one hundred six thousand, two hundred fifty-two".