211332333786381 has 48 divisors (see below), whose sum is σ = 309658597248000. Its totient is φ = 138863493849600.

The previous prime is 211332333786377. The next prime is 211332333786383. The reversal of 211332333786381 is 183687333233112.

211332333786381 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 3 + 233 + 378 + 6 + 38 + 1 = 666.

It is not a de Polignac number, because 211332333786381 - 2² = 211332333786377 is a prime.

It is a super-2 number, since 2×211332333786381² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211332333786383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 960976485 + ... + 961196373.

It is an arithmetic number, because the mean of its divisors is an integer number (6451220776000).

Almost surely, 2^{211332333786381} is an apocalyptic number.

It is an amenable number.

211332333786381 is a deficient number, since it is larger than the sum of its proper divisors (98326263461619).

211332333786381 is a wasteful number, since it uses less digits than its factorization.

211332333786381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222314 (or 222311 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The spelling of 211332333786381 in words is "two hundred eleven trillion, three hundred thirty-two billion, three hundred thirty-three million, seven hundred eighty-six thousand, three hundred eighty-one".