221202111201012 has 36 divisors (see below), whose sum is σ = 567025130127456. Its totient is φ = 72695529501840.

The previous prime is 221202111200957. The next prime is 221202111201013. The reversal of 221202111201012 is 210102111202122.

221202111201012 is a `hidden beast` number, since 221 + 20 + 211 + 1 + 201 + 0 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202111201013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43271145958 + ... + 43271151069.

It is an arithmetic number, because the mean of its divisors is an integer number (15750698059096).

Almost surely, 2^{221202111201012} is an apocalyptic number.

It is an amenable number.

221202111201012 is an abundant number, since it is smaller than the sum of its proper divisors (345823018926444).

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

221202111201012 is a wasteful number, since it uses less digits than its factorization.

221202111201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86542297108 (or 86542297103 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221202111201012 its reverse (210102111202122), we get a palindrome (431304222403134).

The spelling of 221202111201012 in words is "two hundred twenty-one trillion, two hundred two billion, one hundred eleven million, two hundred one thousand, twelve".