7212314815381 has 16 divisors (see below), whose sum is σ = 8176003597440. Its totient is φ = 6307048238400.

The previous prime is 7212314815379. The next prime is 7212314815471. The reversal of 7212314815381 is 1835184132127.

It is not a de Polignac number, because 7212314815381 - 2¹ = 7212314815379 is a prime.

It is a super-2 number, since 2×7212314815381² (a number of 27 digits) 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 (7212314813381) 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, 31011831 + ... + 31243531.

It is an arithmetic number, because the mean of its divisors is an integer number (511000224840).

Almost surely, 2^{7212314815381} is an apocalyptic number.

It is an amenable number.

7212314815381 is a deficient number, since it is larger than the sum of its proper divisors (963688782059).

7212314815381 is a wasteful number, since it uses less digits than its factorization.

7212314815381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357756.

The product of its digits is 322560, while the sum is 46.

The spelling of 7212314815381 in words is "seven trillion, two hundred twelve billion, three hundred fourteen million, eight hundred fifteen thousand, three hundred eighty-one".