21213612523262 has 8 divisors (see below), whose sum is σ = 31911594771000. Its totient is φ = 10576414266264.

The previous prime is 21213612523261. The next prime is 21213612523303. The reversal of 21213612523262 is 26232521631212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21213612523262² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213612523261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15195996812 + ... + 15195998207.

It is an arithmetic number, because the mean of its divisors is an integer number (3988949346375).

Almost surely, 2^{21213612523262} is an apocalyptic number.

21213612523262 is a deficient number, since it is larger than the sum of its proper divisors (10697982247738).

21213612523262 is a wasteful number, since it uses less digits than its factorization.

21213612523262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30391995370.

The product of its digits is 103680, while the sum is 38.

The spelling of 21213612523262 in words is "twenty-one trillion, two hundred thirteen billion, six hundred twelve million, five hundred twenty-three thousand, two hundred sixty-two".