221101002012 has 48 divisors (see below), whose sum is σ = 587272234752. Its totient is φ = 64087246080.

The previous prime is 221101001993. The next prime is 221101002037. The reversal of 221101002012 is 210200101122.

221101002012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×221101002012³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36410173 + ... + 36416244.

It is an arithmetic number, because the mean of its divisors is an integer number (12234838224).

Almost surely, 2^221101002012 is an apocalyptic number.

221101002012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221101002012 is an abundant number, since it is smaller than the sum of its proper divisors (366171232740).

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

221101002012 is a wasteful number, since it uses less digits than its factorization.

221101002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72826458 (or 72826456 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221101002012 its reverse (210200101122), we get a palindrome (431301103134).

The spelling of 221101002012 in words is "two hundred twenty-one billion, one hundred one million, two thousand, twelve".