1102218421 has 4 divisors (see below), whose sum is σ = 1103175532. Its totient is φ = 1101261312.

The previous prime is 1102218401. The next prime is 1102218433. The reversal of 1102218421 is 1248122011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1248122011 = 1229 ⋅1015559.

It can be written as a sum of positive squares in 2 ways, for example, as 940648900 + 161569521 = 30670^2 + 12711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102218421 - 2¹⁵ = 1102185653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102218392 and 1102218401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102218401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476826 + ... + 479131.

It is an arithmetic number, because the mean of its divisors is an integer number (275793883).

Almost surely, 2^1102218421 is an apocalyptic number.

It is an amenable number.

1102218421 is a deficient number, since it is larger than the sum of its proper divisors (957111).

1102218421 is an equidigital number, since it uses as much as digits as its factorization.

1102218421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957110.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1102218421 is about 33199.6750134696. The cubic root of 1102218421 is about 1032.9735985283.

The spelling of 1102218421 in words is "one billion, one hundred two million, two hundred eighteen thousand, four hundred twenty-one".