10978111 has 2 divisors, whose sum is σ = 10978112. Its totient is φ = 10978110.

The previous prime is 10978103. The next prime is 10978117. The reversal of 10978111 is 11187901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10978111 - 2³ = 10978103 is a prime.

It is a super-2 number, since 2×10978111² = 241037842256642, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10978111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10978117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5489055 + 5489056.

It is an arithmetic number, because the mean of its divisors is an integer number (5489056).

Almost surely, 2^10978111 is an apocalyptic number.

10978111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10978111 is an equidigital number, since it uses as much as digits as its factorization.

10978111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 28.

The square root of 10978111 is about 3313.3232561886. The cubic root of 10978111 is about 222.2503938266.

It can be divided in two parts, 10 and 978111, that added together give a square (978121 = 989²).

The spelling of 10978111 in words is "ten million, nine hundred seventy-eight thousand, one hundred eleven".