1102402021 has 8 divisors (see below), whose sum is σ = 1326198080. Its totient is φ = 895183488.

The previous prime is 1102402003. The next prime is 1102402031. The reversal of 1102402021 is 1202042011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1102402021 - 2¹¹ = 1102399973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102401992 and 1102402010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102402001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4144236 + ... + 4144501.

It is an arithmetic number, because the mean of its divisors is an integer number (165774760).

Almost surely, 2^1102402021 is an apocalyptic number.

It is an amenable number.

1102402021 is a deficient number, since it is larger than the sum of its proper divisors (223796059).

1102402021 is an equidigital number, since it uses as much as digits as its factorization.

1102402021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8288763.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1102402021 is about 33202.4399856396. The cubic root of 1102402021 is about 1033.0309505678.

Adding to 1102402021 its reverse (1202042011), we get a palindrome (2304444032).

The spelling of 1102402021 in words is "one billion, one hundred two million, four hundred two thousand, twenty-one".