1220297023 has 4 divisors (see below), whose sum is σ = 1331233128. Its totient is φ = 1109360920.

The previous prime is 1220296967. The next prime is 1220297053. The reversal of 1220297023 is 3207920221.

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 1220297023 - 2¹³ = 1220288831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220296982 and 1220297000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220297053) 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, 55468036 + ... + 55468057.

It is an arithmetic number, because the mean of its divisors is an integer number (332808282).

Almost surely, 2^1220297023 is an apocalyptic number.

1220297023 is a deficient number, since it is larger than the sum of its proper divisors (110936105).

1220297023 is a wasteful number, since it uses less digits than its factorization.

1220297023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110936104.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1220297023 is about 34932.7500062620. The cubic root of 1220297023 is about 1068.6164383874.

The spelling of 1220297023 in words is "one billion, two hundred twenty million, two hundred ninety-seven thousand, twenty-three".