1020210021020 has 24 divisors (see below), whose sum is σ = 2171789554704. Its totient is φ = 402493815936.

The previous prime is 1020210021011. The next prime is 1020210021053. The reversal of 1020210021020 is 201200120201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1020210020992 and 1020210021010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349385534 + ... + 349388453.

It is an arithmetic number, because the mean of its divisors is an integer number (90491231446).

Almost surely, 2^{1020210021020} is an apocalyptic number.

1020210021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020210021020 is an abundant number, since it is smaller than the sum of its proper divisors (1151579533684).

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

1020210021020 is a wasteful number, since it uses less digits than its factorization.

1020210021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698774069 (or 698774067 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1020210021020 its reverse (201200120201), we get a palindrome (1221410141221).

The spelling of 1020210021020 in words is "one trillion, twenty billion, two hundred ten million, twenty-one thousand, twenty".