1221194934970 has 16 divisors (see below), whose sum is σ = 2313843035040. Its totient is φ = 462768606864.

The previous prime is 1221194934943. The next prime is 1221194934977. The reversal of 1221194934970 is 794394911221.

It is not an unprimeable number, because it can be changed into a prime (1221194934977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3213670692 + ... + 3213671071.

It is an arithmetic number, because the mean of its divisors is an integer number (144615189690).

Almost surely, 2^{1221194934970} is an apocalyptic number.

1221194934970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221194934970 is a deficient number, since it is larger than the sum of its proper divisors (1092648100070).

1221194934970 is a wasteful number, since it uses less digits than its factorization.

1221194934970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427341789.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 1221194934970 in words is "one trillion, two hundred twenty-one billion, one hundred ninety-four million, nine hundred thirty-four thousand, nine hundred seventy".