1222011120020 has 72 divisors (see below), whose sum is σ = 2727714146976. Its totient is φ = 459771644416.

The previous prime is 1222011120017. The next prime is 1222011120067. The reversal of 1222011120020 is 200211102221.

It is a super-2 number, since 2×1222011120020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222011119977 and 1222011120004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9571847 + ... + 9698673.

It is an arithmetic number, because the mean of its divisors is an integer number (37884918708).

Almost surely, 2^{1222011120020} is an apocalyptic number.

1222011120020 is a gapful number since it is divisible by the number (10) 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 1222011120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363857073488).

1222011120020 is an abundant number, since it is smaller than the sum of its proper divisors (1505703026956).

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

1222011120020 is a wasteful number, since it uses less digits than its factorization.

1222011120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128537 (or 128518 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1222011120020 its reverse (200211102221), we get a palindrome (1422222222241).

The spelling of 1222011120020 in words is "one trillion, two hundred twenty-two billion, eleven million, one hundred twenty thousand, twenty".