101211222012 has 24 divisors (see below), whose sum is σ = 238019045376. Its totient is φ = 33471427248.

The previous prime is 101211222001. The next prime is 101211222017. The reversal of 101211222012 is 210222112101.

It is a super-2 number, since 2×101211222012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101211221982 and 101211222000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211222017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33204258 + ... + 33207305.

It is an arithmetic number, because the mean of its divisors is an integer number (9917460224).

Almost surely, 2^101211222012 is an apocalyptic number.

101211222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101211222012 is an abundant number, since it is smaller than the sum of its proper divisors (136807823364).

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

101211222012 is a wasteful number, since it uses less digits than its factorization.

101211222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66411697 (or 66411695 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101211222012 its reverse (210222112101), we get a palindrome (311433334113).

The spelling of 101211222012 in words is "one hundred one billion, two hundred eleven million, two hundred twenty-two thousand, twelve".