1021351104 has 42 divisors (see below), whose sum is σ = 2927520180. Its totient is φ = 340450176.

The previous prime is 1021351081. The next prime is 1021351147. The reversal of 1021351104 is 4011531201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 886014 + ... + 887165.

Almost surely, 2^1021351104 is an apocalyptic number.

It is an amenable number.

1021351104 is an abundant number, since it is smaller than the sum of its proper divisors (1906169076).

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

1021351104 is a wasteful number, since it uses less digits than its factorization.

1021351104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773197 (or 1773184 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1021351104 is about 31958.5841989285. The cubic root of 1021351104 is about 1007.0669748860.

Adding to 1021351104 its reverse (4011531201), we get a palindrome (5032882305).

The spelling of 1021351104 in words is "one billion, twenty-one million, three hundred fifty-one thousand, one hundred four".