212601401 has 2 divisors, whose sum is σ = 212601402. Its totient is φ = 212601400.

The previous prime is 212601353. The next prime is 212601419. The reversal of 212601401 is 104106212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185613376 + 26988025 = 13624^2 + 5195^2 .

It is a cyclic number.

It is not a de Polignac number, because 212601401 - 2²⁶ = 145492537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212601401.

It is not a weakly prime, because it can be changed into another prime (212601461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106300700 + 106300701.

It is an arithmetic number, because the mean of its divisors is an integer number (106300701).

Almost surely, 2^212601401 is an apocalyptic number.

It is an amenable number.

212601401 is a deficient number, since it is larger than the sum of its proper divisors (1).

212601401 is an equidigital number, since it uses as much as digits as its factorization.

212601401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 212601401 is about 14580.8573479065. The cubic root of 212601401 is about 596.8364988223.

Adding to 212601401 its reverse (104106212), we get a palindrome (316707613).

The spelling of 212601401 in words is "two hundred twelve million, six hundred one thousand, four hundred one".