21101341 has 2 divisors, whose sum is σ = 21101342. Its totient is φ = 21101340.

The previous prime is 21101323. The next prime is 21101371. The reversal of 21101341 is 14310112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14100025 + 7001316 = 3755^2 + 2646^2 .

It is a cyclic number.

It is not a de Polignac number, because 21101341 - 2⁵ = 21101309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21101371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550670 + 10550671.

It is an arithmetic number, because the mean of its divisors is an integer number (10550671).

Almost surely, 2^21101341 is an apocalyptic number.

It is an amenable number.

21101341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101341 is an equidigital number, since it uses as much as digits as its factorization.

21101341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 21101341 is about 4593.6195967886. The cubic root of 21101341 is about 276.3355026992.

Adding to 21101341 its reverse (14310112), we get a palindrome (35411453).

The spelling of 21101341 in words is "twenty-one million, one hundred one thousand, three hundred forty-one".