1216201030 has 32 divisors (see below), whose sum is σ = 2391236640. Its totient is φ = 441688320.

The previous prime is 1216201013. The next prime is 1216201067. The reversal of 1216201030 is 301026121.

It is a junction number, because it is equal to n+sod(n) for n = 1216200995 and 1216201013.

It is a congruent number.

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, 84522 + ... + 97858.

It is an arithmetic number, because the mean of its divisors is an integer number (74726145).

Almost surely, 2^1216201030 is an apocalyptic number.

1216201030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216201030 is a deficient number, since it is larger than the sum of its proper divisors (1175035610).

1216201030 is a wasteful number, since it uses less digits than its factorization.

1216201030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14184.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1216201030 is about 34874.0738945137. The cubic root of 1216201030 is about 1067.4194751933.

Adding to 1216201030 its reverse (301026121), we get a palindrome (1517227151).

The spelling of 1216201030 in words is "one billion, two hundred sixteen million, two hundred one thousand, thirty".