101211021021222 has 96 divisors (see below), whose sum is σ = 255115657555200. Its totient is φ = 28399409181504.

The previous prime is 101211021021211. The next prime is 101211021021311. The reversal of 101211021021222 is 222120120112101.

101211021021222 is a `hidden beast` number, since 1 + 0 + 1 + 211 + 0 + 210 + 21 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 101211021021195 and 101211021021204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 894868 + ... + 14255624.

It is an arithmetic number, because the mean of its divisors is an integer number (2657454766200).

Almost surely, 2^{101211021021222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101211021021222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127557828777600).

101211021021222 is an abundant number, since it is smaller than the sum of its proper divisors (153904636533978).

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

101211021021222 is a wasteful number, since it uses less digits than its factorization.

101211021021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13361850 (or 13361847 counting only the distinct ones).

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

Adding to 101211021021222 its reverse (222120120112101), we get a palindrome (323331141133323).

The spelling of 101211021021222 in words is "one hundred one trillion, two hundred eleven billion, twenty-one million, twenty-one thousand, two hundred twenty-two".