1216101411 has 32 divisors (see below), whose sum is σ = 2063923200. Its totient is φ = 693256320.

The previous prime is 1216101407. The next prime is 1216101413. The reversal of 1216101411 is 1141016121.

1216101411 is a `hidden beast` number, since 12 + 1 + 610 + 1 + 41 + 1 = 666.

It is not a de Polignac number, because 1216101411 - 2² = 1216101407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1216101413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73995 + ... + 88923.

It is an arithmetic number, because the mean of its divisors is an integer number (64497600).

Almost surely, 2^1216101411 is an apocalyptic number.

1216101411 is a deficient number, since it is larger than the sum of its proper divisors (847821789).

1216101411 is a wasteful number, since it uses less digits than its factorization.

1216101411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15376 (or 15370 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 1216101411 is about 34872.6455979468. The cubic root of 1216101411 is about 1067.3903302955.

Adding to 1216101411 its reverse (1141016121), we get a palindrome (2357117532).

The spelling of 1216101411 in words is "one billion, two hundred sixteen million, one hundred one thousand, four hundred eleven".