1020201222220 has 24 divisors (see below), whose sum is σ = 2144584487808. Its totient is φ = 407668694400.

The previous prime is 1020201222197. The next prime is 1020201222241. The reversal of 1020201222220 is 222221020201.

It is a junction number, because it is equal to n+sod(n) for n = 1020201222194 and 1020201222203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25716841 + ... + 25756480.

It is an arithmetic number, because the mean of its divisors is an integer number (89357686992).

Almost surely, 2^{1020201222220} is an apocalyptic number.

1020201222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020201222220 is an abundant number, since it is smaller than the sum of its proper divisors (1124383265588).

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

1020201222220 is a wasteful number, since it uses less digits than its factorization.

1020201222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51474321 (or 51474319 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1020201222220 its reverse (222221020201), we get a palindrome (1242422242421).

It can be divided in two parts, 1020201 and 222220, that added together give a palindrome (1242421).

The spelling of 1020201222220 in words is "one trillion, twenty billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty".