1211000220983 has 16 divisors (see below), whose sum is σ = 1444209440256. Its totient is φ = 992845502880.

The previous prime is 1211000220949. The next prime is 1211000221009. The reversal of 1211000220983 is 3890220001121.

It is not a de Polignac number, because 1211000220983 - 2¹² = 1211000216887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211000225983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9863513 + ... + 9985533.

It is an arithmetic number, because the mean of its divisors is an integer number (90263090016).

Almost surely, 2^{1211000220983} is an apocalyptic number.

1211000220983 is a deficient number, since it is larger than the sum of its proper divisors (233209219273).

1211000220983 is a wasteful number, since it uses less digits than its factorization.

1211000220983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183694.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 1211000220983 in words is "one trillion, two hundred eleven billion, two hundred twenty thousand, nine hundred eighty-three".