221212321131033 has 32 divisors (see below), whose sum is σ = 330131643390720. Its totient is φ = 146390636476800.

The previous prime is 221212321131023. The next prime is 221212321131037. The reversal of 221212321131033 is 330131123212122.

221212321131033 is a `hidden beast` number, since 2 + 2 + 1 + 21 + 2 + 321 + 1 + 310 + 3 + 3 = 666.

It is not a de Polignac number, because 221212321131033 - 2⁵ = 221212321131001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 221212321130988 and 221212321131006.

It is not an unprimeable number, because it can be changed into a prime (221212321131037) 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, 68393308 + ... + 71554658.

It is an arithmetic number, because the mean of its divisors is an integer number (10316613855960).

Almost surely, 2^{221212321131033} is an apocalyptic number.

It is an amenable number.

221212321131033 is a deficient number, since it is larger than the sum of its proper divisors (108919322259687).

221212321131033 is a wasteful number, since it uses less digits than its factorization.

221212321131033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180414 (or 3180408 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 221212321131033 its reverse (330131123212122), we get a palindrome (551343444343155).

The spelling of 221212321131033 in words is "two hundred twenty-one trillion, two hundred twelve billion, three hundred twenty-one million, one hundred thirty-one thousand, thirty-three".