21152211103402 has 8 divisors (see below), whose sum is σ = 32129940916800. Its totient is φ = 10442230797804.

The previous prime is 21152211103393. The next prime is 21152211103411. The reversal of 21152211103402 is 20430111225112.

It is an interprime number because it is at equal distance from previous prime (21152211103393) and next prime (21152211103411).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66937376752 + ... + 66937377067.

It is an arithmetic number, because the mean of its divisors is an integer number (4016242614600).

Almost surely, 2^{21152211103402} is an apocalyptic number.

21152211103402 is a deficient number, since it is larger than the sum of its proper divisors (10977729813398).

21152211103402 is a wasteful number, since it uses less digits than its factorization.

21152211103402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133874753900.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 21152211103402 its reverse (20430111225112), we get a palindrome (41582322328514).

The spelling of 21152211103402 in words is "twenty-one trillion, one hundred fifty-two billion, two hundred eleven million, one hundred three thousand, four hundred two".