1023650221 has 4 divisors (see below), whose sum is σ = 1116709344. Its totient is φ = 930591100.

The previous prime is 1023650219. The next prime is 1023650231. The reversal of 1023650221 is 1220563201.

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 1023650221 - 2¹ = 1023650219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023650192 and 1023650201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023650231) 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, 46529545 + ... + 46529566.

It is an arithmetic number, because the mean of its divisors is an integer number (279177336).

Almost surely, 2^1023650221 is an apocalyptic number.

1023650221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1023650221 is a deficient number, since it is larger than the sum of its proper divisors (93059123).

1023650221 is an equidigital number, since it uses as much as digits as its factorization.

1023650221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93059122.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1023650221 is about 31994.5342363348. The cubic root of 1023650221 is about 1007.8220628034.

The spelling of 1023650221 in words is "one billion, twenty-three million, six hundred fifty thousand, two hundred twenty-one".