10211399986 has 4 divisors (see below), whose sum is σ = 15317099982. Its totient is φ = 5105699992.

The previous prime is 10211399941. The next prime is 10211399993. The reversal of 10211399986 is 68999311201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7886328025 + 2325071961 = 88805^2 + 48219^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552849995 + ... + 2552849998.

Almost surely, 2^10211399986 is an apocalyptic number.

10211399986 is a deficient number, since it is larger than the sum of its proper divisors (5105699996).

10211399986 is an equidigital number, since it uses as much as digits as its factorization.

10211399986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105699995.

The product of its (nonzero) digits is 209952, while the sum is 49.

The spelling of 10211399986 in words is "ten billion, two hundred eleven million, three hundred ninety-nine thousand, nine hundred eighty-six".