10010021020 has 24 divisors (see below), whose sum is σ = 21096944064. Its totient is φ = 3989551296.

The previous prime is 10010021003. The next prime is 10010021023. The reversal of 10010021020 is 2012001001.

It is a junction number, because it is equal to n+sod(n) for n = 10010020994 and 10010021012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010021023) 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, 897892 + ... + 908971.

It is an arithmetic number, because the mean of its divisors is an integer number (879039336).

Almost surely, 2^10010021020 is an apocalyptic number.

10010021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10010021020 is an abundant number, since it is smaller than the sum of its proper divisors (11086923044).

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

10010021020 is a wasteful number, since it uses less digits than its factorization.

10010021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807149 (or 1807147 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10010021020 its reverse (2012001001), we get a palindrome (12022022021).

The spelling of 10010021020 in words is "ten billion, ten million, twenty-one thousand, twenty".