12202981 has 4 divisors (see below), whose sum is σ = 13946272. Its totient is φ = 10459692.

The previous prime is 12202979. The next prime is 12203003. The reversal of 12202981 is 18920221.

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: 18920221 = 647 ⋅29243.

It is a cyclic number.

It is not a de Polignac number, because 12202981 - 2¹ = 12202979 is a prime.

It is a super-2 number, since 2×12202981² = 297825490572722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202961) 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, 871635 + ... + 871648.

It is an arithmetic number, because the mean of its divisors is an integer number (3486568).

Almost surely, 2^12202981 is an apocalyptic number.

It is an amenable number.

12202981 is a deficient number, since it is larger than the sum of its proper divisors (1743291).

12202981 is an equidigital number, since it uses as much as digits as its factorization.

12202981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743290.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12202981 is about 3493.2765421592. The cubic root of 12202981 is about 230.2265002505.

The spelling of 12202981 in words is "twelve million, two hundred two thousand, nine hundred eighty-one".