222011120021020 has 192 divisors, whose sum is σ = 539267956899840. Its totient is φ = 75926971296000.

The previous prime is 222011120021003. The next prime is 222011120021059. The reversal of 222011120021020 is 20120021110222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 222011120020985 and 222011120021003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 988946827 + ... + 989171293.

It is an arithmetic number, because the mean of its divisors is an integer number (2808687275520).

Almost surely, 2^{222011120021020} is an apocalyptic number.

222011120021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222011120021020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269633978449920).

222011120021020 is an abundant number, since it is smaller than the sum of its proper divisors (317256836878820).

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

222011120021020 is a wasteful number, since it uses less digits than its factorization.

222011120021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226224 (or 226222 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222011120021020 its reverse (20120021110222), we get a palindrome (242131141131242).

The spelling of 222011120021020 in words is "two hundred twenty-two trillion, eleven billion, one hundred twenty million, twenty-one thousand, twenty".