20121119 has 16 divisors (see below), whose sum is σ = 21488544. Its totient is φ = 18816000.

The previous prime is 20121107. The next prime is 20121121. The reversal of 20121119 is 91112102.

It is a cyclic number.

It is not a de Polignac number, because 20121119 - 2⁴ = 20121103 is a prime.

It is a super-2 number, since 2×20121119² = 809718859624322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20121097 and 20121106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121169) 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, 178007 + ... + 178119.

It is an arithmetic number, because the mean of its divisors is an integer number (1343034).

Almost surely, 2^20121119 is an apocalyptic number.

20121119 is a deficient number, since it is larger than the sum of its proper divisors (1367425).

20121119 is a wasteful number, since it uses less digits than its factorization.

20121119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 20121119 is about 4485.6570310268. The cubic root of 20121119 is about 271.9886051671.

The spelling of 20121119 in words is "twenty million, one hundred twenty-one thousand, one hundred nineteen".