211416661242 has 48 divisors (see below), whose sum is σ = 473957771040. Its totient is φ = 68028813216.

The previous prime is 211416661241. The next prime is 211416661279. The reversal of 211416661242 is 242166614112.

It is a junction number, because it is equal to n+sod(n) for n = 211416661197 and 211416661206.

It is not an unprimeable number, because it can be changed into a prime (211416661241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2825193 + ... + 2899059.

It is an arithmetic number, because the mean of its divisors is an integer number (9874120230).

Almost surely, 2^211416661242 is an apocalyptic number.

211416661242 is an abundant number, since it is smaller than the sum of its proper divisors (262541109798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211416661242 is a wasteful number, since it uses less digits than its factorization.

211416661242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79387 (or 79384 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The spelling of 211416661242 in words is "two hundred eleven billion, four hundred sixteen million, six hundred sixty-one thousand, two hundred forty-two".