1010120321 has 16 divisors (see below), whose sum is σ = 1183865088. Its totient is φ = 843782400.

The previous prime is 1010120299. The next prime is 1010120323. The reversal of 1010120321 is 1230210101.

It is a cyclic number.

It is not a de Polignac number, because 1010120321 - 2¹⁸ = 1009858177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1010120323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441701 + ... + 443981.

It is an arithmetic number, because the mean of its divisors is an integer number (73991568).

Almost surely, 2^1010120321 is an apocalyptic number.

It is an amenable number.

1010120321 is a deficient number, since it is larger than the sum of its proper divisors (173744767).

1010120321 is a wasteful number, since it uses less digits than its factorization.

1010120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1010120321 is about 31782.3901083603. The cubic root of 1010120321 is about 1003.3621237886.

Adding to 1010120321 its reverse (1230210101), we get a palindrome (2240330422).

The spelling of 1010120321 in words is "one billion, ten million, one hundred twenty thousand, three hundred twenty-one".