20172946222 has 32 divisors (see below), whose sum is σ = 35578620000. Its totient is φ = 8457246720.

The previous prime is 20172946207. The next prime is 20172946279. The reversal of 20172946222 is 22264927102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328978 + ... + 385450.

It is an arithmetic number, because the mean of its divisors is an integer number (1111831875).

Almost surely, 2^20172946222 is an apocalyptic number.

20172946222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20172946222 is a deficient number, since it is larger than the sum of its proper divisors (15405673778).

20172946222 is a wasteful number, since it uses less digits than its factorization.

20172946222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57748.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 20172946222 in words is "twenty billion, one hundred seventy-two million, nine hundred forty-six thousand, two hundred twenty-two".