1222209999946 has 24 divisors (see below), whose sum is σ = 1986735254400. Its totient is φ = 563657052816.

The previous prime is 1222209999931. The next prime is 1222210000001. The reversal of 1222209999946 is 6499999022221.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 975546 + ... + 1842853.

It is an arithmetic number, because the mean of its divisors is an integer number (82780635600).

Almost surely, 2^{1222209999946} is an apocalyptic number.

1222209999946 is a deficient number, since it is larger than the sum of its proper divisors (764525254454).

1222209999946 is a wasteful number, since it uses less digits than its factorization.

1222209999946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819710 (or 2819697 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 64.

The spelling of 1222209999946 in words is "one trillion, two hundred twenty-two billion, two hundred nine million, nine hundred ninety-nine thousand, nine hundred forty-six".