10780121 has 8 divisors (see below), whose sum is σ = 11851488. Its totient is φ = 9724000.

The previous prime is 10780117. The next prime is 10780127. The reversal of 10780121 is 12108701.

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

It is not a de Polignac number, because 10780121 - 2² = 10780117 is a prime.

It is a super-2 number, since 2×10780121² = 232422017549282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10780093 and 10780102.

It is not an unprimeable number, because it can be changed into a prime (10780127) 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, 2300 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (1481436).

Almost surely, 2^10780121 is an apocalyptic number.

10780121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10780121 is a deficient number, since it is larger than the sum of its proper divisors (1071367).

10780121 is a wasteful number, since it uses less digits than its factorization.

10780121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 10780121 is about 3283.3094584580. The cubic root of 10780121 is about 220.9061865085.

Adding to 10780121 its reverse (12108701), we get a palindrome (22888822).

It can be divided in two parts, 10780 and 121, that added together give a palindrome (10901).

The spelling of 10780121 in words is "ten million, seven hundred eighty thousand, one hundred twenty-one".