1020201022220 has 48 divisors (see below), whose sum is σ = 2171335221216. Its totient is φ = 402601920000.

The previous prime is 1020201022213. The next prime is 1020201022249. The reversal of 1020201022220 is 222201020201.

It is a junction number, because it is equal to n+sod(n) for n = 1020201022195 and 1020201022204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331046 + ... + 1466285.

It is an arithmetic number, because the mean of its divisors is an integer number (45236150442).

Almost surely, 2^{1020201022220} is an apocalyptic number.

1020201022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020201022220 is an abundant number, since it is smaller than the sum of its proper divisors (1151134198996).

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

1020201022220 is a wasteful number, since it uses less digits than its factorization.

1020201022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797722 (or 1797720 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1020201022220 its reverse (222201020201), we get a palindrome (1242402042421).

The spelling of 1020201022220 in words is "one trillion, twenty billion, two hundred one million, twenty-two thousand, two hundred twenty".