21001001011202 has 64 divisors (see below), whose sum is σ = 32240332800000. Its totient is φ = 10257771363840.

The previous prime is 21001001011189. The next prime is 21001001011231. The reversal of 21001001011202 is 20211010010012.

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 31 ways as a sum of consecutive naturals, for example, 6905950802 + ... + 6905953842.

It is an arithmetic number, because the mean of its divisors is an integer number (503755200000).

Almost surely, 2^{21001001011202} is an apocalyptic number.

21001001011202 is a deficient number, since it is larger than the sum of its proper divisors (11239331788798).

21001001011202 is a wasteful number, since it uses less digits than its factorization.

21001001011202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21001001011202 its reverse (20211010010012), we get a palindrome (41212011021214).

The spelling of 21001001011202 in words is "twenty-one trillion, one billion, one million, eleven thousand, two hundred two".