1021121298 has 12 divisors (see below), whose sum is σ = 2212429518. Its totient is φ = 340373760.

The previous prime is 1021121293. The next prime is 1021121327. The reversal of 1021121298 is 8921211201.

1021121298 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 570111129 + 451010169 = 23877^2 + 21237^2 .

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 5 ways as a sum of consecutive naturals, for example, 28364463 + ... + 28364498.

Almost surely, 2^1021121298 is an apocalyptic number.

1021121298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1021121298 is an abundant number, since it is smaller than the sum of its proper divisors (1191308220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021121298 is a wasteful number, since it uses less digits than its factorization.

1021121298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56728969 (or 56728966 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 1021121298 is about 31954.9886246264. The cubic root of 1021121298 is about 1006.9914385395.

Adding to 1021121298 its reverse (8921211201), we get a palindrome (9942332499).

The spelling of 1021121298 in words is "one billion, twenty-one million, one hundred twenty-one thousand, two hundred ninety-eight".