222120221986 has 16 divisors (see below), whose sum is σ = 359273799864. Its totient is φ = 102384393984.

The previous prime is 222120221977. The next prime is 222120222013. The reversal of 222120221986 is 689122021222.

It can be written as a sum of positive squares in 4 ways, for example, as 140456300625 + 81663921361 = 374775^2 + 285769^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5505831 + ... + 5546026.

Almost surely, 2^222120221986 is an apocalyptic number.

222120221986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

222120221986 is a deficient number, since it is larger than the sum of its proper divisors (137153577878).

222120221986 is a wasteful number, since it uses less digits than its factorization.

222120221986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052645.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 222120221986 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, nine hundred eighty-six".