1020000202221 has 128 divisors (see below), whose sum is σ = 1880266752000. Its totient is φ = 474648284160.

The previous prime is 1020000202183. The next prime is 1020000202237. The reversal of 1020000202221 is 1222020000201.

It is not a de Polignac number, because 1020000202221 - 2²² = 1019996007917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020000202197 and 1020000202206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020000202241) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 43210380 + ... + 43233978.

It is an arithmetic number, because the mean of its divisors is an integer number (14689584000).

Almost surely, 2^{1020000202221} is an apocalyptic number.

1020000202221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020000202221 is a deficient number, since it is larger than the sum of its proper divisors (860266549779).

1020000202221 is a wasteful number, since it uses less digits than its factorization.

1020000202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24059.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1020000202221 its reverse (1222020000201), we get a palindrome (2242020202422).

It can be divided in two parts, 1020000 and 202221, that added together give a palindrome (1222221).

The spelling of 1020000202221 in words is "one trillion, twenty billion, two hundred two thousand, two hundred twenty-one".