11921002 has 4 divisors (see below), whose sum is σ = 17881506. Its totient is φ = 5960500.

The previous prime is 11920991. The next prime is 11921017. The reversal of 11921002 is 20012911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20012911 = 283 ⋅70717.

It can be written as a sum of positive squares in only one way, i.e., 10233601 + 1687401 = 3199^2 + 1299^2 .

It is a super-2 number, since 2×11921002² = 284220577368008, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2980249 + ... + 2980252.

Almost surely, 2^11921002 is an apocalyptic number.

11921002 is a deficient number, since it is larger than the sum of its proper divisors (5960504).

11921002 is an equidigital number, since it uses as much as digits as its factorization.

11921002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960503.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 11921002 is about 3452.6804080308. The cubic root of 11921002 is about 228.4393523797.

Adding to 11921002 its reverse (20012911), we get a palindrome (31933913).

The spelling of 11921002 in words is "eleven million, nine hundred twenty-one thousand, two".