11920920971 has 2 divisors, whose sum is σ = 11920920972. Its totient is φ = 11920920970.

The previous prime is 11920920937. The next prime is 11920920997. The reversal of 11920920971 is 17902902911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11920920971 - 2¹⁰ = 11920919947 is a prime.

It is not a weakly prime, because it can be changed into another prime (11920925971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5960460485 + 5960460486.

It is an arithmetic number, because the mean of its divisors is an integer number (5960460486).

Almost surely, 2^11920920971 is an apocalyptic number.

11920920971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11920920971 is an equidigital number, since it uses as much as digits as its factorization.

11920920971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 41.

The spelling of 11920920971 in words is "eleven billion, nine hundred twenty million, nine hundred twenty thousand, nine hundred seventy-one".