212222023129 has 8 divisors (see below), whose sum is σ = 213019615880. Its totient is φ = 211425192576.

The previous prime is 212222023121. The next prime is 212222023147. The reversal of 212222023129 is 921320222212.

It can be written as a sum of positive squares in 4 ways, for example, as 617423104 + 211604600025 = 24848^2 + 460005^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 212222023129 - 2³ = 212222023121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212222023097 and 212222023106.

It is not an unprimeable number, because it can be changed into a prime (212222023121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370459 + ... + 749455.

It is an arithmetic number, because the mean of its divisors is an integer number (26627451985).

Almost surely, 2^212222023129 is an apocalyptic number.

It is an amenable number.

212222023129 is a deficient number, since it is larger than the sum of its proper divisors (797592751).

212222023129 is a wasteful number, since it uses less digits than its factorization.

212222023129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381099.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 212222023129 in words is "two hundred twelve billion, two hundred twenty-two million, twenty-three thousand, one hundred twenty-nine".