1211200020986 has 16 divisors (see below), whose sum is σ = 1923719915304. Its totient is φ = 569961874944.

The previous prime is 1211200020977. The next prime is 1211200021019. The reversal of 1211200020986 is 6890200021121.

It can be written as a sum of positive squares in 4 ways, for example, as 1148045817961 + 63154203025 = 1071469^2 + 251305^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 953006 + ... + 1824998.

Almost surely, 2^{1211200020986} is an apocalyptic number.

1211200020986 is a deficient number, since it is larger than the sum of its proper divisors (712519894318).

1211200020986 is a wasteful number, since it uses less digits than its factorization.

1211200020986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912865.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 1211200020986 in words is "one trillion, two hundred eleven billion, two hundred million, twenty thousand, nine hundred eighty-six".