1221101083 has 2 divisors, whose sum is σ = 1221101084. Its totient is φ = 1221101082.

The previous prime is 1221101081. The next prime is 1221101107. The reversal of 1221101083 is 3801011221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221101083 - 2¹ = 1221101081 is a prime.

Together with 1221101081, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1221101083.

It is not a weakly prime, because it can be changed into another prime (1221101081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610550541 + 610550542.

It is an arithmetic number, because the mean of its divisors is an integer number (610550542).

Almost surely, 2^1221101083 is an apocalyptic number.

1221101083 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221101083 is an equidigital number, since it uses as much as digits as its factorization.

1221101083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1221101083 is about 34944.2567956453. The cubic root of 1221101083 is about 1068.8510924836.

The spelling of 1221101083 in words is "one billion, two hundred twenty-one million, one hundred one thousand, eighty-three".