1791202122212 has 6 divisors (see below), whose sum is σ = 3134603713878. Its totient is φ = 895601061104.

The previous prime is 1791202122173. The next prime is 1791202122323. The reversal of 1791202122212 is 2122212021971.

It can be written as a sum of positive squares in only one way, i.e., 1320899684416 + 470302437796 = 1149304^2 + 685786^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223900265273 + ... + 223900265280.

It is an arithmetic number, because the mean of its divisors is an integer number (522433952313).

Almost surely, 2^{1791202122212} is an apocalyptic number.

It is an amenable number.

1791202122212 is a deficient number, since it is larger than the sum of its proper divisors (1343401591666).

1791202122212 is a wasteful number, since it uses less digits than its factorization.

1791202122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447800530557 (or 447800530555 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 1791202122212 in words is "one trillion, seven hundred ninety-one billion, two hundred two million, one hundred twenty-two thousand, two hundred twelve".