201515533213 has 2 divisors, whose sum is σ = 201515533214. Its totient is φ = 201515533212.

The previous prime is 201515533211. The next prime is 201515533217. The reversal of 201515533213 is 312335515102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110182835844 + 91332697369 = 331938^2 + 302213^2 .

It is a cyclic number.

It is not a de Polignac number, because 201515533213 - 2¹ = 201515533211 is a prime.

It is a super-2 number, since 2×201515533213² (a number of 23 digits) contains 22 as substring.

Together with 201515533211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201515533211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100757766606 + 100757766607.

It is an arithmetic number, because the mean of its divisors is an integer number (100757766607).

Almost surely, 2^201515533213 is an apocalyptic number.

It is an amenable number.

201515533213 is a deficient number, since it is larger than the sum of its proper divisors (1).

201515533213 is an equidigital number, since it uses as much as digits as its factorization.

201515533213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 31.

The spelling of 201515533213 in words is "two hundred one billion, five hundred fifteen million, five hundred thirty-three thousand, two hundred thirteen".