1121421215 has 8 divisors (see below), whose sum is σ = 1364659488. Its totient is φ = 884500960.

The previous prime is 1121421181. The next prime is 1121421251. The reversal of 1121421215 is 5121241211.

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

It is not a de Polignac number, because 1121421215 - 2¹² = 1121417119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1579112 + ... + 1579821.

It is an arithmetic number, because the mean of its divisors is an integer number (170582436).

Almost surely, 2^1121421215 is an apocalyptic number.

1121421215 is a deficient number, since it is larger than the sum of its proper divisors (243238273).

1121421215 is an equidigital number, since it uses as much as digits as its factorization.

1121421215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159009.

The product of its digits is 160, while the sum is 20.

The square root of 1121421215 is about 33487.6277899764. The cubic root of 1121421215 is about 1038.9378996115.

Adding to 1121421215 its reverse (5121241211), we get a palindrome (6242662426).

The spelling of 1121421215 in words is "one billion, one hundred twenty-one million, four hundred twenty-one thousand, two hundred fifteen".