1210660121 has 8 divisors (see below), whose sum is σ = 1339322688. Its totient is φ = 1085098000.

The previous prime is 1210660093. The next prime is 1210660181.

1210660121 is nontrivially palindromic in base 10.

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-1210660121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210660093 and 1210660102.

It is not an unprimeable number, because it can be changed into a prime (1210660181) 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, 774290 + ... + 775851.

It is an arithmetic number, because the mean of its divisors is an integer number (167415336).

Almost surely, 2^1210660121 is an apocalyptic number.

1210660121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210660121 is a deficient number, since it is larger than the sum of its proper divisors (128662567).

1210660121 is a wasteful number, since it uses less digits than its factorization.

1210660121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550223.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1210660121 is about 34794.5415403049. The cubic root of 1210660121 is about 1065.7959829192.

It can be divided in two parts, 12106 and 60121, that added together give a palindrome (72227).

The spelling of 1210660121 in words is "one billion, two hundred ten million, six hundred sixty thousand, one hundred twenty-one".