1421101111 has 8 divisors (see below), whose sum is σ = 1515522960. Its totient is φ = 1327882368.

The previous prime is 1421101103. The next prime is 1421101117. The reversal of 1421101111 is 1111011241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421101111 - 2³ = 1421101103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421101091 and 1421101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421101117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298336 + ... + 303061.

It is an arithmetic number, because the mean of its divisors is an integer number (189440370).

Almost surely, 2^1421101111 is an apocalyptic number.

1421101111 is a deficient number, since it is larger than the sum of its proper divisors (94421849).

1421101111 is a wasteful number, since it uses less digits than its factorization.

1421101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601553.

The product of its (nonzero) digits is 8, while the sum is 13.

The square root of 1421101111 is about 37697.4947576096. The cubic root of 1421101111 is about 1124.2813150701.

Adding to 1421101111 its reverse (1111011241), we get a palindrome (2532112352).

The spelling of 1421101111 in words is "one billion, four hundred twenty-one million, one hundred one thousand, one hundred eleven".