212007422 has 16 divisors (see below), whose sum is σ = 362005632. Its totient is φ = 92176920.

The previous prime is 212007409. The next prime is 212007427. The reversal of 212007422 is 224700212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212007394 and 212007403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212007427) 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, 208988 + ... + 209999.

It is an arithmetic number, because the mean of its divisors is an integer number (22625352).

Almost surely, 2^212007422 is an apocalyptic number.

212007422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212007422 is a deficient number, since it is larger than the sum of its proper divisors (149998210).

212007422 is a wasteful number, since it uses less digits than its factorization.

212007422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419023.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 212007422 is about 14560.4746488567. The cubic root of 212007422 is about 596.2801540889.

Adding to 212007422 its reverse (224700212), we get a palindrome (436707634).

The spelling of 212007422 in words is "two hundred twelve million, seven thousand, four hundred twenty-two".