1421011121 has 8 divisors (see below), whose sum is σ = 1496998080. Its totient is φ = 1345143888.

The previous prime is 1421011069. The next prime is 1421011127. The reversal of 1421011121 is 1211101241.

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 1421011121 - 2⁶ = 1421011057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421011096 and 1421011105.

It is not an unprimeable number, because it can be changed into a prime (1421011127) 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, 5021 + ... + 53546.

It is an arithmetic number, because the mean of its divisors is an integer number (187124760).

Almost surely, 2^1421011121 is an apocalyptic number.

It is an amenable number.

1421011121 is a deficient number, since it is larger than the sum of its proper divisors (75986959).

1421011121 is a wasteful number, since it uses less digits than its factorization.

1421011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59863.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1421011121 is about 37696.3011580712. The cubic root of 1421011121 is about 1124.2575831882.

Adding to 1421011121 its reverse (1211101241), we get a palindrome (2632112362).

The spelling of 1421011121 in words is "one billion, four hundred twenty-one million, eleven thousand, one hundred twenty-one".