212220000111986 has 4 divisors (see below), whose sum is σ = 318330000167982. Its totient is φ = 106110000055992.

The previous prime is 212220000111943. The next prime is 212220000111989. The reversal of 212220000111986 is 689111000022212.

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., 176378453370025 + 35841546741961 = 13280755^2 + 5986781^2 .

It is not an unprimeable number, because it can be changed into a prime (212220000111989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53055000027995 + ... + 53055000027998.

Almost surely, 2^{212220000111986} is an apocalyptic number.

212220000111986 is a deficient number, since it is larger than the sum of its proper divisors (106110000055996).

212220000111986 is a wasteful number, since it uses less digits than its factorization.

212220000111986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106110000055995.

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 212220000111986 in words is "two hundred twelve trillion, two hundred twenty billion, one hundred eleven thousand, nine hundred eighty-six".