21203614346 has 16 divisors (see below), whose sum is σ = 33218678880. Its totient is φ = 10140434640.

The previous prime is 21203614343. The next prime is 21203614381. The reversal of 21203614346 is 64341630212.

It is a super-2 number, since 2×21203614346² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21203614343) 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, 2423900 + ... + 2432631.

It is an arithmetic number, because the mean of its divisors is an integer number (2076167430).

Almost surely, 2^21203614346 is an apocalyptic number.

21203614346 is a deficient number, since it is larger than the sum of its proper divisors (12015064534).

21203614346 is a wasteful number, since it uses less digits than its factorization.

21203614346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856629.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 21203614346 in words is "twenty-one billion, two hundred three million, six hundred fourteen thousand, three hundred forty-six".