1221035 has 8 divisors (see below), whose sum is σ = 1542480. Its totient is φ = 925344.

The previous prime is 1221029. The next prime is 1221049. The reversal of 1221035 is 5301221.

It is a happy number.

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 1221035 - 2⁴ = 1221019 is a prime.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6332 + ... + 6521.

It is an arithmetic number, because the mean of its divisors is an integer number (192810).

2^1221035 is an apocalyptic number.

1221035 is a deficient number, since it is larger than the sum of its proper divisors (321445).

1221035 is a wasteful number, since it uses less digits than its factorization.

1221035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12877.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1221035 is about 1105.0045248776. The cubic root of 1221035 is about 106.8831810935.

Adding to 1221035 its reverse (5301221), we get a palindrome (6522256).

It can be divided in two parts, 12210 and 35, that multiplied together give a triangular number (427350 = T₉₂₄).

The spelling of 1221035 in words is "one million, two hundred twenty-one thousand, thirty-five".