20111077 has 8 divisors (see below), whose sum is σ = 23118336. Its totient is φ = 17137392.

The previous prime is 20111071. The next prime is 20111081. The reversal of 20111077 is 77011102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7093 + ... + 9514.

It is an arithmetic number, because the mean of its divisors is an integer number (2889792).

Almost surely, 2^20111077 is an apocalyptic number.

It is an amenable number.

20111077 is a deficient number, since it is larger than the sum of its proper divisors (3007259).

20111077 is a wasteful number, since it uses less digits than its factorization.

20111077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16787.

The product of its (nonzero) digits is 98, while the sum is 19.

The square root of 20111077 is about 4484.5375458346. The cubic root of 20111077 is about 271.9433498299.

Adding to 20111077 its reverse (77011102), we get a palindrome (97122179).

The spelling of 20111077 in words is "twenty million, one hundred eleven thousand, seventy-seven".