21195401222 has 16 divisors (see below), whose sum is σ = 32204174400. Its totient is φ = 10460748480.

The previous prime is 21195401179. The next prime is 21195401231. The reversal of 21195401222 is 22210459112.

21195401222 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652322 + ... + 684042.

It is an arithmetic number, because the mean of its divisors is an integer number (2012760900).

Almost surely, 2^21195401222 is an apocalyptic number.

21195401222 is a deficient number, since it is larger than the sum of its proper divisors (11008773178).

21195401222 is a wasteful number, since it uses less digits than its factorization.

21195401222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36031.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 21195401222 in words is "twenty-one billion, one hundred ninety-five million, four hundred one thousand, two hundred twenty-two".