21101632246 has 4 divisors (see below), whose sum is σ = 31652448372. Its totient is φ = 10550816122.

The previous prime is 21101632243. The next prime is 21101632249. The reversal of 21101632246 is 64223610112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21101632243) and next prime (21101632249).

It is a super-3 number, since 3×21101632246³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101632243) 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, 5275408060 + ... + 5275408063.

It is an arithmetic number, because the mean of its divisors is an integer number (7913112093).

Almost surely, 2^21101632246 is an apocalyptic number.

21101632246 is a deficient number, since it is larger than the sum of its proper divisors (10550816126).

21101632246 is a wasteful number, since it uses less digits than its factorization.

21101632246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10550816125.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 21101632246 in words is "twenty-one billion, one hundred one million, six hundred thirty-two thousand, two hundred forty-six".