1223689101 has 4 divisors (see below), whose sum is σ = 1631585472. Its totient is φ = 815792732.

The previous prime is 1223689099. The next prime is 1223689109. The reversal of 1223689101 is 1019863221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1223689101 - 2¹ = 1223689099 is a prime.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223689109) 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, 203948181 + ... + 203948186.

It is an arithmetic number, because the mean of its divisors is an integer number (407896368).

Almost surely, 2^1223689101 is an apocalyptic number.

It is an amenable number.

1223689101 is a deficient number, since it is larger than the sum of its proper divisors (407896371).

1223689101 is an equidigital number, since it uses as much as digits as its factorization.

1223689101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407896370.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1223689101 is about 34981.2678586697. The cubic root of 1223689101 is about 1069.6056720890.

The spelling of 1223689101 in words is "one billion, two hundred twenty-three million, six hundred eighty-nine thousand, one hundred one".