1102512421 has 4 divisors (see below), whose sum is σ = 1132310092. Its totient is φ = 1072714752.

The previous prime is 1102512419. The next prime is 1102512431. The reversal of 1102512421 is 1242152011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1242152011 = 137 ⋅9066803.

It can be written as a sum of positive squares in 2 ways, for example, as 610781796 + 491730625 = 24714^2 + 22175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102512421 - 2¹ = 1102512419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102512431) 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, 14898780 + ... + 14898853.

It is an arithmetic number, because the mean of its divisors is an integer number (283077523).

Almost surely, 2^1102512421 is an apocalyptic number.

It is an amenable number.

1102512421 is a deficient number, since it is larger than the sum of its proper divisors (29797671).

1102512421 is an equidigital number, since it uses as much as digits as its factorization.

1102512421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29797670.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1102512421 is about 33204.1024724355. The cubic root of 1102512421 is about 1033.0654336958.

Adding to 1102512421 its reverse (1242152011), we get a palindrome (2344664432).

The spelling of 1102512421 in words is "one billion, one hundred two million, five hundred twelve thousand, four hundred twenty-one".