10021111210020 has 24 divisors (see below), whose sum is σ = 28059111388224. Its totient is φ = 2672296322656.

The previous prime is 10021111210013. The next prime is 10021111210049. The reversal of 10021111210020 is 2001211112001.

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 = 10021111209978 and 10021111210005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83509260024 + ... + 83509260143.

It is an arithmetic number, because the mean of its divisors is an integer number (1169129641176).

Almost surely, 2^{10021111210020} is an apocalyptic number.

10021111210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021111210020 is an abundant number, since it is smaller than the sum of its proper divisors (18038000178204).

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

10021111210020 is a wasteful number, since it uses less digits than its factorization.

10021111210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167018520179 (or 167018520177 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10021111210020 its reverse (2001211112001), we get a palindrome (12022322322021).

The spelling of 10021111210020 in words is "ten trillion, twenty-one billion, one hundred eleven million, two hundred ten thousand, twenty".