1102981 has 4 divisors (see below), whose sum is σ = 1203264. Its totient is φ = 1002700.

The previous prime is 1102979. The next prime is 1102991. The reversal of 1102981 is 1892011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1892011 = 11 ⋅172001.

It is a cyclic number.

It is not a de Polignac number, because 1102981 - 2¹ = 1102979 is a prime.

It is a super-2 number, since 2×1102981² = 2433134172722, which contains 22 as substring.

It is a Duffinian number.

1102981 is a modest number, since divided by 2981 gives 11 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50125 + ... + 50146.

It is an arithmetic number, because the mean of its divisors is an integer number (300816).

2^1102981 is an apocalyptic number.

1102981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1102981 is a deficient number, since it is larger than the sum of its proper divisors (100283).

1102981 is a wasteful number, since it uses less digits than its factorization.

1102981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100282.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1102981 is about 1050.2290226422. The cubic root of 1102981 is about 103.3211767408.

Adding to 1102981 its reverse (1892011), we get a palindrome (2994992).

The spelling of 1102981 in words is "one million, one hundred two thousand, nine hundred eighty-one".