1423121101 has 4 divisors (see below), whose sum is σ = 1426779900. Its totient is φ = 1419462304.

The previous prime is 1423121099. The next prime is 1423121137. The reversal of 1423121101 is 1011213241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117744201 + 1305376900 = 10851^2 + 36130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423121101 - 2¹ = 1423121099 is a prime.

It is a super-2 number, since 2×1423121101² = 4050547336222904402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423121171) 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, 1828816 + ... + 1829593.

It is an arithmetic number, because the mean of its divisors is an integer number (356694975).

Almost surely, 2^1423121101 is an apocalyptic number.

It is an amenable number.

1423121101 is a deficient number, since it is larger than the sum of its proper divisors (3658799).

1423121101 is an equidigital number, since it uses as much as digits as its factorization.

1423121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658798.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1423121101 is about 37724.2773423163. The cubic root of 1423121101 is about 1124.8137570870.

Adding to 1423121101 its reverse (1011213241), we get a palindrome (2434334342).

The spelling of 1423121101 in words is "one billion, four hundred twenty-three million, one hundred twenty-one thousand, one hundred one".