1022201112020 has 144 divisors (see below), whose sum is σ = 2441218336704. Its totient is φ = 356527180800.

The previous prime is 1022201112011. The next prime is 1022201112059. The reversal of 1022201112020 is 202111022201.

It is a super-2 number, since 2×1022201112020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1022201111986 and 1022201112004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23869067 + ... + 23911853.

It is an arithmetic number, because the mean of its divisors is an integer number (16952905116).

Almost surely, 2^{1022201112020} is an apocalyptic number.

1022201112020 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 1022201112020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1220609168352).

1022201112020 is an abundant number, since it is smaller than the sum of its proper divisors (1419017224684).

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

1022201112020 is a wasteful number, since it uses less digits than its factorization.

1022201112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42982 (or 42949 counting only the distinct ones).

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

Adding to 1022201112020 its reverse (202111022201), we get a palindrome (1224312134221).

The spelling of 1022201112020 in words is "one trillion, twenty-two billion, two hundred one million, one hundred twelve thousand, twenty".