981212021211011 has 8 divisors (see below), whose sum is σ = 1039049287125840. Its totient is φ = 923387967710208.

The previous prime is 981212021211007. The next prime is 981212021211047. The reversal of 981212021211011 is 110112120212189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 981212021211011 - 2² = 981212021211007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (981212021217011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3302950601 + ... + 3303247658.

It is an arithmetic number, because the mean of its divisors is an integer number (129881160890730).

Almost surely, 2^{981212021211011} is an apocalyptic number.

981212021211011 is a deficient number, since it is larger than the sum of its proper divisors (57837265914829).

981212021211011 is a wasteful number, since it uses less digits than its factorization.

981212021211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606207013.

The product of its (nonzero) digits is 1152, while the sum is 32.

The spelling of 981212021211011 in words is "nine hundred eighty-one trillion, two hundred twelve billion, twenty-one million, two hundred eleven thousand, eleven".