1216512101030 has 64 divisors (see below), whose sum is σ = 2283885849600. Its totient is φ = 466221724800.

The previous prime is 1216512101029. The next prime is 1216512101059. The reversal of 1216512101030 is 301012156121.

It is a junction number, because it is equal to n+sod(n) for n = 1216512100987 and 1216512101005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4592951 + ... + 4850589.

It is an arithmetic number, because the mean of its divisors is an integer number (35685716400).

Almost surely, 2^{1216512101030} is an apocalyptic number.

1216512101030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216512101030 is a deficient number, since it is larger than the sum of its proper divisors (1067373748570).

1216512101030 is a wasteful number, since it uses less digits than its factorization.

1216512101030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257909.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 1216512101030 its reverse (301012156121), we get a palindrome (1517524257151).

The spelling of 1216512101030 in words is "one trillion, two hundred sixteen billion, five hundred twelve million, one hundred one thousand, thirty".