1221011022194 has 8 divisors (see below), whose sum is σ = 1832751545520. Its totient is φ = 610093840356.

The previous prime is 1221011022167. The next prime is 1221011022239. The reversal of 1221011022194 is 4912201101221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205831664 + ... + 205837595.

It is an arithmetic number, because the mean of its divisors is an integer number (229093943190).

Almost surely, 2^{1221011022194} is an apocalyptic number.

1221011022194 is a deficient number, since it is larger than the sum of its proper divisors (611740523326).

1221011022194 is a wasteful number, since it uses less digits than its factorization.

1221011022194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411670744.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 1221011022194 in words is "one trillion, two hundred twenty-one billion, eleven million, twenty-two thousand, one hundred ninety-four".