212420122 has 8 divisors (see below), whose sum is σ = 328908672. Its totient is φ = 102783900.

The previous prime is 212420081. The next prime is 212420141. The reversal of 212420122 is 221024212.

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 = 212420096 and 212420105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713004 + ... + 1713127.

It is an arithmetic number, because the mean of its divisors is an integer number (41113584).

Almost surely, 2^212420122 is an apocalyptic number.

212420122 is a deficient number, since it is larger than the sum of its proper divisors (116488550).

212420122 is a wasteful number, since it uses less digits than its factorization.

212420122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426164.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 212420122 is about 14574.6396867984. The cubic root of 212420122 is about 596.6668155731. Note that the first 3 decimals are identical.

Adding to 212420122 its reverse (221024212), we get a palindrome (433444334).

The spelling of 212420122 in words is "two hundred twelve million, four hundred twenty thousand, one hundred twenty-two".