212051322 has 36 divisors (see below), whose sum is σ = 534458106. Its totient is φ = 60585840.

The previous prime is 212051317. The next prime is 212051327. The reversal of 212051322 is 223150212.

It is an interprime number because it is at equal distance from previous prime (212051317) and next prime (212051327).

It can be written as a sum of positive squares in only one way, i.e., 133888041 + 78163281 = 11571^2 + 8841^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212051295 and 212051304.

It is not an unprimeable number, because it can be changed into a prime (212051327) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 119329 + ... + 121092.

Almost surely, 2^212051322 is an apocalyptic number.

212051322 is an abundant number, since it is smaller than the sum of its proper divisors (322406784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212051322 is a wasteful number, since it uses less digits than its factorization.

212051322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240443 (or 240433 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 212051322 is about 14561.9820766268. The cubic root of 212051322 is about 596.3213081389.

The spelling of 212051322 in words is "two hundred twelve million, fifty-one thousand, three hundred twenty-two".