210010001021020 has 48 divisors (see below), whose sum is σ = 443682100528128. Its totient is φ = 83497369397760.

The previous prime is 210010001020921. The next prime is 210010001021123. The reversal of 210010001021020 is 20120100010012.

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 = 210010001020988 and 210010001021006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6075640 + ... + 21376000.

It is an arithmetic number, because the mean of its divisors is an integer number (9243377094336).

Almost surely, 2^{210010001021020} is an apocalyptic number.

210010001021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210010001021020 is an abundant number, since it is smaller than the sum of its proper divisors (233672099507108).

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

210010001021020 is a wasteful number, since it uses less digits than its factorization.

210010001021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15304510 (or 15304508 counting only the distinct ones).

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

Adding to 210010001021020 its reverse (20120100010012), we get a palindrome (230130101031032).

The spelling of 210010001021020 in words is "two hundred ten trillion, ten billion, one million, twenty-one thousand, twenty".