21210122210219 has 32 divisors (see below), whose sum is σ = 21941252669952. Its totient is φ = 20494850688000.

The previous prime is 21210122210171. The next prime is 21210122210281. The reversal of 21210122210219 is 91201222101212.

It is a cyclic number.

It is not a de Polignac number, because 21210122210219 - 2²⁴ = 21210105433003 is a prime.

It is a super-2 number, since 2×21210122210219² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21210122216219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1291952699 + ... + 1291969115.

It is an arithmetic number, because the mean of its divisors is an integer number (685664145936).

Almost surely, 2^{21210122210219} is an apocalyptic number.

21210122210219 is a deficient number, since it is larger than the sum of its proper divisors (731130459733).

21210122210219 is a wasteful number, since it uses less digits than its factorization.

21210122210219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18227.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 21210122210219 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred ten thousand, two hundred nineteen".