10021121211020 has 24 divisors (see below), whose sum is σ = 21161920777200. Its totient is φ = 3986054916032.

The previous prime is 10021121210999. The next prime is 10021121211061. The reversal of 10021121211020 is 2011212112001.

It is a junction number, because it is equal to n+sod(n) for n = 10021121210986 and 10021121211004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1399594355 + ... + 1399601514.

It is an arithmetic number, because the mean of its divisors is an integer number (881746699050).

Almost surely, 2^{10021121211020} is an apocalyptic number.

10021121211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021121211020 is an abundant number, since it is smaller than the sum of its proper divisors (11140799566180).

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

10021121211020 is a wasteful number, since it uses less digits than its factorization.

10021121211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799196057 (or 2799196055 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10021121211020 its reverse (2011212112001), we get a palindrome (12032333323021).

The spelling of 10021121211020 in words is "ten trillion, twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, twenty".