1021222002101 has 6 divisors (see below), whose sum is σ = 1187952124950. Its totient is φ = 875333144616.

The previous prime is 1021222002083. The next prime is 1021222002187. The reversal of 1021222002101 is 1012002221201.

It can be written as a sum of positive squares in only one way, i.e., 934035267025 + 87186735076 = 966455^2 + 295274^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1021222002101 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 (1021222002301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10420632626 + ... + 10420632723.

It is an arithmetic number, because the mean of its divisors is an integer number (197992020825).

Almost surely, 2^{1021222002101} is an apocalyptic number.

It is an amenable number.

1021222002101 is a deficient number, since it is larger than the sum of its proper divisors (166730122849).

1021222002101 is an equidigital number, since it uses as much as digits as its factorization.

1021222002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20841265363 (or 20841265356 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021222002101 its reverse (1012002221201), we get a palindrome (2033224223302).

The spelling of 1021222002101 in words is "one trillion, twenty-one billion, two hundred twenty-two million, two thousand, one hundred one".