1021121297 has 16 divisors (see below), whose sum is σ = 1191640320. Its totient is φ = 856956672.

The previous prime is 1021121293. The next prime is 1021121327. The reversal of 1021121297 is 7921211201.

1021121297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1021121297 - 2² = 1021121293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021121293) 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, 56213 + ... + 72125.

It is an arithmetic number, because the mean of its divisors is an integer number (74477520).

Almost surely, 2^1021121297 is an apocalyptic number.

It is an amenable number.

1021121297 is a deficient number, since it is larger than the sum of its proper divisors (170519023).

1021121297 is a wasteful number, since it uses less digits than its factorization.

1021121297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16112.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1021121297 is about 31954.9886089793. The cubic root of 1021121297 is about 1006.9914382108.

Adding to 1021121297 its reverse (7921211201), we get a palindrome (8942332498).

The spelling of 1021121297 in words is "one billion, twenty-one million, one hundred twenty-one thousand, two hundred ninety-seven".