1121302021 has 16 divisors (see below), whose sum is σ = 1308182400. Its totient is φ = 941220288.

The previous prime is 1121302001. The next prime is 1121302037. The reversal of 1121302021 is 1202031211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121302021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121301992 and 1121302010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121302001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106051 + ... + 116143.

It is an arithmetic number, because the mean of its divisors is an integer number (81761400).

Almost surely, 2^1121302021 is an apocalyptic number.

It is an amenable number.

1121302021 is a deficient number, since it is larger than the sum of its proper divisors (186880379).

1121302021 is a wasteful number, since it uses less digits than its factorization.

1121302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10428.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1121302021 is about 33485.8480704909. The cubic root of 1121302021 is about 1038.9010893122.

Adding to 1121302021 its reverse (1202031211), we get a palindrome (2323333232).

The spelling of 1121302021 in words is "one billion, one hundred twenty-one million, three hundred two thousand, twenty-one".