1102302121 has 4 divisors (see below), whose sum is σ = 1102370500. Its totient is φ = 1102233744.

The previous prime is 1102302077. The next prime is 1102302199. The reversal of 1102302121 is 1212032011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1212032011 = 113 ⋅10725947.

It can be written as a sum of positive squares in 2 ways, for example, as 565916521 + 536385600 = 23789^2 + 23160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102302121 - 2⁹ = 1102301609 is a prime.

It is a super-2 number, since 2×1102302121² = 2430139931922197282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102308121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4855 + ... + 47203.

It is an arithmetic number, because the mean of its divisors is an integer number (275592625).

Almost surely, 2^1102302121 is an apocalyptic number.

It is an amenable number.

1102302121 is a deficient number, since it is larger than the sum of its proper divisors (68379).

1102302121 is an equidigital number, since it uses as much as digits as its factorization.

1102302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68378.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1102302121 is about 33200.9355440476. The cubic root of 1102302121 is about 1032.9997451009. Note that the first 3 decimals are identical.

Adding to 1102302121 its reverse (1212032011), we get a palindrome (2314334132).

The spelling of 1102302121 in words is "one billion, one hundred two million, three hundred two thousand, one hundred twenty-one".