7212981 has 16 divisors (see below), whose sum is σ = 10243584. Its totient is φ = 4498944.

The previous prime is 7212979. The next prime is 7212983. The reversal of 7212981 is 1892127.

It is an interprime number because it is at equal distance from previous prime (7212979) and next prime (7212983).

It is not a de Polignac number, because 7212981 - 2¹ = 7212979 is a prime.

It is a super-2 number, since 2×7212981² = 104054189812722, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11580 + ... + 12186.

It is an arithmetic number, because the mean of its divisors is an integer number (640224).

Almost surely, 2^7212981 is an apocalyptic number.

It is an amenable number.

7212981 is a deficient number, since it is larger than the sum of its proper divisors (3030603).

7212981 is a wasteful number, since it uses less digits than its factorization.

7212981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860.

The product of its digits is 2016, while the sum is 30.

The square root of 7212981 is about 2685.6993502624. The cubic root of 7212981 is about 193.2138537104.

The spelling of 7212981 in words is "seven million, two hundred twelve thousand, nine hundred eighty-one".