1022020220221 has 48 divisors (see below), whose sum is σ = 1383524273152. Its totient is φ = 734637911040.

The previous prime is 1022020220183. The next prime is 1022020220297. The reversal of 1022020220221 is 1220220202201.

It is not a de Polignac number, because 1022020220221 - 2¹⁵ = 1022020187453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022020220195 and 1022020220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022020220021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17224621 + ... + 17283853.

Almost surely, 2^{1022020220221} is an apocalyptic number.

1022020220221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1022020220221 is a deficient number, since it is larger than the sum of its proper divisors (361504052931).

1022020220221 is a wasteful number, since it uses less digits than its factorization.

1022020220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60842 (or 60831 counting only the distinct ones).

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

Adding to 1022020220221 its reverse (1220220202201), we get a palindrome (2242240422422).

The spelling of 1022020220221 in words is "one trillion, twenty-two billion, twenty million, two hundred twenty thousand, two hundred twenty-one".