1020010121020 has 24 divisors (see below), whose sum is σ = 2336750459568. Its totient is φ = 370912771200.

The previous prime is 1020010120957. The next prime is 1020010121023. The reversal of 1020010121020 is 201210100201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1020010120988 and 1020010121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020010121023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2318204601 + ... + 2318205040.

It is an arithmetic number, because the mean of its divisors is an integer number (97364602482).

Almost surely, 2^{1020010121020} is an apocalyptic number.

1020010121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020010121020 is an abundant number, since it is smaller than the sum of its proper divisors (1316740338548).

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

1020010121020 is a wasteful number, since it uses less digits than its factorization.

1020010121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636409661 (or 4636409659 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1020010121020 its reverse (201210100201), we get a palindrome (1221220221221).

The spelling of 1020010121020 in words is "one trillion, twenty billion, ten million, one hundred twenty-one thousand, twenty".