21401011222 has 8 divisors (see below), whose sum is σ = 32111656200. Its totient is φ = 10697125824.

The previous prime is 21401011207. The next prime is 21401011223. The reversal of 21401011222 is 22211010412.

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

It is a junction number, because it is equal to n+sod(n) for n = 21401011196 and 21401011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21401011223) by changing a digit.

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, 1681972 + ... + 1694647.

It is an arithmetic number, because the mean of its divisors is an integer number (4013957025).

Almost surely, 2^21401011222 is an apocalyptic number.

21401011222 is a deficient number, since it is larger than the sum of its proper divisors (10710644978).

21401011222 is a wasteful number, since it uses less digits than its factorization.

21401011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379790.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21401011222 its reverse (22211010412), we get a palindrome (43612021634).

The spelling of 21401011222 in words is "twenty-one billion, four hundred one million, eleven thousand, two hundred twenty-two".