2141106382781 has 2 divisors, whose sum is σ = 2141106382782. Its totient is φ = 2141106382780.

The previous prime is 2141106382763. The next prime is 2141106382847. The reversal of 2141106382781 is 1872836011412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1973940700900 + 167165681881 = 1404970^2 + 408859^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141106382781 - 2⁶ = 2141106382717 is a prime.

It is a super-2 number, since 2×2141106382781² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141106382721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070553191390 + 1070553191391.

It is an arithmetic number, because the mean of its divisors is an integer number (1070553191391).

Almost surely, 2^{2141106382781} is an apocalyptic number.

It is an amenable number.

2141106382781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141106382781 is an equidigital number, since it uses as much as digits as its factorization.

2141106382781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 2141106382781 in words is "two trillion, one hundred forty-one billion, one hundred six million, three hundred eighty-two thousand, seven hundred eighty-one".