1020221112204 has 72 divisors (see below), whose sum is σ = 2947614852000. Its totient is φ = 291461144832.

The previous prime is 1020221112199. The next prime is 1020221112221. The reversal of 1020221112204 is 4022111220201.

It is a super-2 number, since 2×1020221112204² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 2249112 + ... + 2664384.

Almost surely, 2^{1020221112204} is an apocalyptic number.

1020221112204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1020221112204 is an abundant number, since it is smaller than the sum of its proper divisors (1927393739796).

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

1020221112204 is a wasteful number, since it uses less digits than its factorization.

1020221112204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425039 (or 425034 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1020221112204 its reverse (4022111220201), we get a palindrome (5042332332405).

The spelling of 1020221112204 in words is "one trillion, twenty billion, two hundred twenty-one million, one hundred twelve thousand, two hundred four".