21050201012 has 24 divisors (see below), whose sum is σ = 38169079200. Its totient is φ = 10151482016.

The previous prime is 21050201009. The next prime is 21050201021. The reversal of 21050201012 is 21010205012.

It is a super-2 number, since 2×21050201012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 828962 + ... + 853977.

It is an arithmetic number, because the mean of its divisors is an integer number (1590378300).

Almost surely, 2^21050201012 is an apocalyptic number.

It is an amenable number.

21050201012 is a deficient number, since it is larger than the sum of its proper divisors (17118878188).

21050201012 is a wasteful number, since it uses less digits than its factorization.

21050201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683055 (or 1683053 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 21050201012 its reverse (21010205012), we get a palindrome (42060406024).

The spelling of 21050201012 in words is "twenty-one billion, fifty million, two hundred one thousand, twelve".