1421331101 has 4 divisors (see below), whose sum is σ = 1425961152. Its totient is φ = 1416701052.

The previous prime is 1421331077. The next prime is 1421331113. The reversal of 1421331101 is 1011331241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1011331241 = 17 ⋅59490073.

It is a cyclic number.

It is not a de Polignac number, because 1421331101 - 2¹⁰ = 1421330077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421331101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421336101) 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, 2314565 + ... + 2315178.

It is an arithmetic number, because the mean of its divisors is an integer number (356490288).

Almost surely, 2^1421331101 is an apocalyptic number.

It is an amenable number.

1421331101 is a deficient number, since it is larger than the sum of its proper divisors (4630051).

1421331101 is an equidigital number, since it uses as much as digits as its factorization.

1421331101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630050.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1421331101 is about 37700.5451021600. The cubic root of 1421331101 is about 1124.3419627631.

Adding to 1421331101 its reverse (1011331241), we get a palindrome (2432662342).

The spelling of 1421331101 in words is "one billion, four hundred twenty-one million, three hundred thirty-one thousand, one hundred one".