1211000220992 has 56 divisors (see below), whose sum is σ = 2416074814272. Its totient is φ = 602226892800.

The previous prime is 1211000220949. The next prime is 1211000221009. The reversal of 1211000220992 is 2990220001121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75722117 + ... + 75738107.

It is an arithmetic number, because the mean of its divisors is an integer number (43144193112).

Almost surely, 2^{1211000220992} is an apocalyptic number.

It is an amenable number.

1211000220992 is a deficient number, since it is larger than the sum of its proper divisors (1205074593280).

1211000220992 is a wasteful number, since it uses less digits than its factorization.

1211000220992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22327 (or 22317 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 1211000220992 in words is "one trillion, two hundred eleven billion, two hundred twenty thousand, nine hundred ninety-two".