1210121 has 12 divisors (see below), whose sum is σ = 1358196. Its totient is φ = 1077120.

The previous prime is 1210103. The next prime is 1210123.

1210121 is nontrivially palindromic in base 10.

1210121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 698896 + 511225 = 836^2 + 715^2 .

It is not a de Polignac number, because 1210121 - 2¹⁴ = 1193737 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210099 and 1210108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8765 + ... + 8901.

It is an arithmetic number, because the mean of its divisors is an integer number (113183).

2^1210121 is an apocalyptic number.

1210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210121 is a deficient number, since it is larger than the sum of its proper divisors (148075).

1210121 is a wasteful number, since it uses less digits than its factorization.

1210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1210121 is about 1100.0549986251. The cubic root of 1210121 is about 106.5637755657.

It can be divided in two parts, 1210 and 121, that added together give a palindrome (1331).

The spelling of 1210121 in words is "one million, two hundred ten thousand, one hundred twenty-one".