1021201351 has 4 divisors (see below), whose sum is σ = 1025474400. Its totient is φ = 1016928304.

The previous prime is 1021201343. The next prime is 1021201381. The reversal of 1021201351 is 1531021201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1531021201 = 4493 ⋅340757.

It is a cyclic number.

It is not a de Polignac number, because 1021201351 - 2³ = 1021201343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021201381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136166 + ... + 2136643.

It is an arithmetic number, because the mean of its divisors is an integer number (256368600).

Almost surely, 2^1021201351 is an apocalyptic number.

1021201351 is a deficient number, since it is larger than the sum of its proper divisors (4273049).

1021201351 is an equidigital number, since it uses as much as digits as its factorization.

1021201351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273048.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1021201351 is about 31956.2411901024. The cubic root of 1021201351 is about 1007.0177529383.

Adding to 1021201351 its reverse (1531021201), we get a palindrome (2552222552).

The spelling of 1021201351 in words is "one billion, twenty-one million, two hundred one thousand, three hundred fifty-one".