101223212220 has 96 divisors (see below), whose sum is σ = 339141042240. Its totient is φ = 24916481280.

The previous prime is 101223212201. The next prime is 101223212227. The reversal of 101223212220 is 22212322101.

101223212220 is a `hidden beast` number, since 1 + 0 + 122 + 321 + 2 + 220 = 666.

It is a super-2 number, since 2×101223212220² (a number of 23 digits) contains 22 as substring.

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 = 101223212193 and 101223212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101223212227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7202611 + ... + 7216650.

It is an arithmetic number, because the mean of its divisors is an integer number (3532719190).

Almost surely, 2^101223212220 is an apocalyptic number.

101223212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101223212220 is an abundant number, since it is smaller than the sum of its proper divisors (237917830020).

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

101223212220 is a wasteful number, since it uses less digits than its factorization.

101223212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14419292 (or 14419284 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 101223212220 its reverse (22212322101), we get a palindrome (123435534321).

The spelling of 101223212220 in words is "one hundred one billion, two hundred twenty-three million, two hundred twelve thousand, two hundred twenty".