121002445 has 8 divisors (see below), whose sum is σ = 147942936. Its totient is φ = 94975296.

The previous prime is 121002433. The next prime is 121002457. The reversal of 121002445 is 544200121.

121002445 is nontrivially palindromic in base 4.

It is an interprime number because it is at equal distance from previous prime (121002433) and next prime (121002457).

It can be written as a sum of positive squares in 4 ways, for example, as 37773316 + 83229129 = 6146^2 + 9123^2 .

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 121002445 - 2¹⁵ = 120969677 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, 228042 + ... + 228571.

It is an arithmetic number, because the mean of its divisors is an integer number (18492867).

Almost surely, 2^121002445 is an apocalyptic number.

It is an amenable number.

121002445 is a deficient number, since it is larger than the sum of its proper divisors (26940491).

121002445 is an equidigital number, since it uses as much as digits as its factorization.

121002445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456671.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 121002445 is about 11000.1111358022. Note that the first 4 decimals coincide. The cubic root of 121002445 is about 494.6120757580.

Adding to 121002445 its reverse (544200121), we get a palindrome (665202566).

The spelling of 121002445 in words is "one hundred twenty-one million, two thousand, four hundred forty-five".