1021212341 has 4 divisors (see below), whose sum is σ = 1022404812. Its totient is φ = 1020019872.

The previous prime is 1021212337. The next prime is 1021212347. The reversal of 1021212341 is 1432121201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 931531441 + 89680900 = 30521^2 + 9470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021212341 - 2² = 1021212337 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 (1021212347) 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, 594950 + ... + 596663.

It is an arithmetic number, because the mean of its divisors is an integer number (255601203).

Almost surely, 2^1021212341 is an apocalyptic number.

It is an amenable number.

1021212341 is a deficient number, since it is larger than the sum of its proper divisors (1192471).

1021212341 is an equidigital number, since it uses as much as digits as its factorization.

1021212341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192470.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1021212341 is about 31956.4131435304. The cubic root of 1021212341 is about 1007.0213653781.

Adding to 1021212341 its reverse (1432121201), we get a palindrome (2453333542).

The spelling of 1021212341 in words is "one billion, twenty-one million, two hundred twelve thousand, three hundred forty-one".