101211221110212 has 72 divisors (see below), whose sum is σ = 256077583017984. Its totient is φ = 33705680174976.

The previous prime is 101211221110159. The next prime is 101211221110231. The reversal of 101211221110212 is 212011122112101.

It is a happy number.

101211221110212 is a `hidden beast` number, since 1 + 0 + 121 + 1 + 221 + 110 + 212 = 666.

It is a super-2 number, since 2×101211221110212² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 490491853 + ... + 490698155.

It is an arithmetic number, because the mean of its divisors is an integer number (3556633097472).

Almost surely, 2^{101211221110212} is an apocalyptic number.

101211221110212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101211221110212 is an abundant number, since it is smaller than the sum of its proper divisors (154866361907772).

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

101211221110212 is a wasteful number, since it uses less digits than its factorization.

101211221110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218929 (or 218924 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 101211221110212 its reverse (212011122112101), we get a palindrome (313222343222313).

The spelling of 101211221110212 in words is "one hundred one trillion, two hundred eleven billion, two hundred twenty-one million, one hundred ten thousand, two hundred twelve".