102030311213218 has 32 divisors (see below), whose sum is σ = 154112360883120. Its totient is φ = 50661078773760.

The previous prime is 102030311213119. The next prime is 102030311213261. The reversal of 102030311213218 is 812312113030201.

It can be written as a sum of positive squares in 8 ways, for example, as 6255766329409 + 95774544883809 = 2501153^2 + 9786447^2 .

It is a super-2 number, since 2×102030311213218² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194580046 + ... + 195103702.

Almost surely, 2^{102030311213218} is an apocalyptic number.

102030311213218 is a deficient number, since it is larger than the sum of its proper divisors (52082049669902).

102030311213218 is a wasteful number, since it uses less digits than its factorization.

102030311213218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525142.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 102030311213218 its reverse (812312113030201), we get a palindrome (914342424243419).

The spelling of 102030311213218 in words is "one hundred two trillion, thirty billion, three hundred eleven million, two hundred thirteen thousand, two hundred eighteen".