212321051 has 2 divisors, whose sum is σ = 212321052. Its totient is φ = 212321050.

The previous prime is 212321003. The next prime is 212321099. The reversal of 212321051 is 150123212.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (212321003) and next prime (212321099).

It is a cyclic number.

It is not a de Polignac number, because 212321051 - 2⁶ = 212320987 is a prime.

It is not a weakly prime, because it can be changed into another prime (212321951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106160525 + 106160526.

It is an arithmetic number, because the mean of its divisors is an integer number (106160526).

Almost surely, 2^212321051 is an apocalyptic number.

212321051 is a deficient number, since it is larger than the sum of its proper divisors (1).

212321051 is an equidigital number, since it uses as much as digits as its factorization.

212321051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 212321051 is about 14571.2405443051. The cubic root of 212321051 is about 596.5740409813.

Adding to 212321051 its reverse (150123212), we get a palindrome (362444263).

The spelling of 212321051 in words is "two hundred twelve million, three hundred twenty-one thousand, fifty-one".