21201111012002 has 8 divisors (see below), whose sum is σ = 31801718786256. Its totient is φ = 10600538083252.

The previous prime is 21201111011959. The next prime is 21201111012091. The reversal of 21201111012002 is 20021011110212.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7133108 + ... + 9658335.

It is an arithmetic number, because the mean of its divisors is an integer number (3975214848282).

Almost surely, 2^{21201111012002} is an apocalyptic number.

21201111012002 is a deficient number, since it is larger than the sum of its proper divisors (10600607774254).

21201111012002 is a wasteful number, since it uses less digits than its factorization.

21201111012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17422752.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21201111012002 its reverse (20021011110212), we get a palindrome (41222122122214).

The spelling of 21201111012002 in words is "twenty-one trillion, two hundred one billion, one hundred eleven million, twelve thousand, two".