1021000222020 has 48 divisors (see below), whose sum is σ = 2867934222720. Its totient is φ = 271396859136.

The previous prime is 1021000221973. The next prime is 1021000222043. The reversal of 1021000222020 is 202220001201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1021000221987 and 1021000222005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27164400 + ... + 27201959.

It is an arithmetic number, because the mean of its divisors is an integer number (59748629640).

Almost surely, 2^{1021000222020} is an apocalyptic number.

1021000222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021000222020 is an abundant number, since it is smaller than the sum of its proper divisors (1846934000700).

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

1021000222020 is a wasteful number, since it uses less digits than its factorization.

1021000222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54366684 (or 54366682 counting only the distinct ones).

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

Adding to 1021000222020 its reverse (202220001201), we get a palindrome (1223220223221).

The spelling of 1021000222020 in words is "one trillion, twenty-one billion, two hundred twenty-two thousand, twenty".