2194021920772 has 24 divisors (see below), whose sum is σ = 4188687646752. Its totient is φ = 997258800000.

The previous prime is 2194021920763. The next prime is 2194021920773. The reversal of 2194021920772 is 2770291204912.

It is not an unprimeable number, because it can be changed into a prime (2194021920773) 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, 1330147 + ... + 2481397.

It is an arithmetic number, because the mean of its divisors is an integer number (174528651948).

Almost surely, 2^{2194021920772} is an apocalyptic number.

2194021920772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2194021920772 is a deficient number, since it is larger than the sum of its proper divisors (1994665725980).

2194021920772 is a wasteful number, since it uses less digits than its factorization.

2194021920772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194579 (or 1194577 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 2194021920772 in words is "two trillion, one hundred ninety-four billion, twenty-one million, nine hundred twenty thousand, seven hundred seventy-two".