103222981 has 4 divisors (see below), whose sum is σ = 103329612. Its totient is φ = 103116352.

The previous prime is 103222979. The next prime is 103222993. The reversal of 103222981 is 189222301.

103222981 = T₈₂₉₄ + T₈₂₉₅ + T₈₂₉₆.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44009956 + 59213025 = 6634^2 + 7695^2 .

It is a cyclic number.

It is not a de Polignac number, because 103222981 - 2¹ = 103222979 is a prime.

It is a super-2 number, since 2×103222981² = 21309967613052722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103222921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51850 + ... + 53803.

It is an arithmetic number, because the mean of its divisors is an integer number (25832403).

Almost surely, 2^103222981 is an apocalyptic number.

103222981 is the 8296-th centered triangular number.

It is an amenable number.

103222981 is a deficient number, since it is larger than the sum of its proper divisors (106631).

103222981 is an equidigital number, since it uses as much as digits as its factorization.

103222981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106630.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 103222981 is about 10159.8711113872. The cubic root of 103222981 is about 469.0928344469.

The spelling of 103222981 in words is "one hundred three million, two hundred twenty-two thousand, nine hundred eighty-one".