1020221100983 has 4 divisors (see below), whose sum is σ = 1165966972560. Its totient is φ = 874475229408.

The previous prime is 1020221100971. The next prime is 1020221100991. The reversal of 1020221100983 is 3890011220201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020221100983 - 2³² = 1015926133687 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 (1020221100083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72872935778 + ... + 72872935791.

It is an arithmetic number, because the mean of its divisors is an integer number (291491743140).

Almost surely, 2^{1020221100983} is an apocalyptic number.

1020221100983 is a deficient number, since it is larger than the sum of its proper divisors (145745871577).

1020221100983 is an equidigital number, since it uses as much as digits as its factorization.

1020221100983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145745871576.

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

The spelling of 1020221100983 in words is "one trillion, twenty billion, two hundred twenty-one million, one hundred thousand, nine hundred eighty-three".