1012121 has 8 divisors (see below), whose sum is σ = 1116288. Its totient is φ = 910000.

The previous prime is 1012103. The next prime is 1012133. The reversal of 1012121 is 1212101.

1012121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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

It is a cyclic number.

It is not a de Polignac number, because 1012121 - 2¹⁴ = 995737 is a prime.

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 = 1012099 and 1012108.

It is not an unprimeable number, because it can be changed into a prime (1012171) by changing a digit.

It is a Zeisel number, with parameters (9, 2).

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656 + ... + 1566.

It is an arithmetic number, because the mean of its divisors is an integer number (139536).

2^1012121 is an apocalyptic number.

1012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012121 is a deficient number, since it is larger than the sum of its proper divisors (104167).

1012121 is a wasteful number, since it uses less digits than its factorization.

1012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023.

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

The square root of 1012121 is about 1006.0422456339. The cubic root of 1012121 is about 100.4024118085.

Adding to 1012121 its reverse (1212101), we get a palindrome (2224222).

It can be divided in two parts, 101 and 2121, that added together give a palindrome (2222).

The spelling of 1012121 in words is "one million, twelve thousand, one hundred twenty-one".