21201945093341 has 2 divisors, whose sum is σ = 21201945093342. Its totient is φ = 21201945093340.

The previous prime is 21201945093337. The next prime is 21201945093401. The reversal of 21201945093341 is 14339054910212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20052394440100 + 1149550653241 = 4477990^2 + 1072171^2 .

It is a cyclic number.

It is not a de Polignac number, because 21201945093341 - 2² = 21201945093337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21201945093292 and 21201945093301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21201945593341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600972546670 + 10600972546671.

It is an arithmetic number, because the mean of its divisors is an integer number (10600972546671).

Almost surely, 2^{21201945093341} is an apocalyptic number.

It is an amenable number.

21201945093341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201945093341 is an equidigital number, since it uses as much as digits as its factorization.

21201945093341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 21201945093341 in words is "twenty-one trillion, two hundred one billion, nine hundred forty-five million, ninety-three thousand, three hundred forty-one".