1021110002121 has 16 divisors (see below), whose sum is σ = 1499956371648. Its totient is φ = 612727272000.

The previous prime is 1021110002111. The next prime is 1021110002203. The reversal of 1021110002121 is 1212000111201.

It is not a de Polignac number, because 1021110002121 - 2⁶ = 1021110002057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021110002097 and 1021110002106.

It is not an unprimeable number, because it can be changed into a prime (1021110002111) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 153178486 + ... + 153185151.

It is an arithmetic number, because the mean of its divisors is an integer number (93747273228).

Almost surely, 2^{1021110002121} is an apocalyptic number.

1021110002121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021110002121 is a deficient number, since it is larger than the sum of its proper divisors (478846369527).

1021110002121 is a wasteful number, since it uses less digits than its factorization.

1021110002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306363752.

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

Adding to 1021110002121 its reverse (1212000111201), we get a palindrome (2233110113322).

The spelling of 1021110002121 in words is "one trillion, twenty-one billion, one hundred ten million, two thousand, one hundred twenty-one".