101222001020 has 24 divisors (see below), whose sum is σ = 242932802784. Its totient is φ = 34704686016.

The previous prime is 101222001011. The next prime is 101222001091. The reversal of 101222001020 is 20100222101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101222000992 and 101222001010.

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 7 ways as a sum of consecutive naturals, for example, 361507007 + ... + 361507286.

It is an arithmetic number, because the mean of its divisors is an integer number (10122200116).

Almost surely, 2^101222001020 is an apocalyptic number.

101222001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101222001020 is an abundant number, since it is smaller than the sum of its proper divisors (141710801764).

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

101222001020 is a wasteful number, since it uses less digits than its factorization.

101222001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723014309 (or 723014307 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 101222001020 its reverse (20100222101), we get a palindrome (121322223121).

The spelling of 101222001020 in words is "one hundred one billion, two hundred twenty-two million, one thousand, twenty".