212137841 has 2 divisors, whose sum is σ = 212137842. Its totient is φ = 212137840.

The previous prime is 212137811. The next prime is 212137903. The reversal of 212137841 is 148731212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209641441 + 2496400 = 14479^2 + 1580^2 .

It is a cyclic number.

It is not a de Polignac number, because 212137841 - 2⁶ = 212137777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212137801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106068920 + 106068921.

It is an arithmetic number, because the mean of its divisors is an integer number (106068921).

Almost surely, 2^212137841 is an apocalyptic number.

It is an amenable number.

212137841 is a deficient number, since it is larger than the sum of its proper divisors (1).

212137841 is an equidigital number, since it uses as much as digits as its factorization.

212137841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 212137841 is about 14564.9524887656. The cubic root of 212137841 is about 596.4023987409.

It can be divided in two parts, 212 and 137841, that multiplied together give a palindrome (29222292).

The spelling of 212137841 in words is "two hundred twelve million, one hundred thirty-seven thousand, eight hundred forty-one".