1020211012121 has 8 divisors (see below), whose sum is σ = 1216649157504. Its totient is φ = 836446295520.

The previous prime is 1020211012111. The next prime is 1020211012129. The reversal of 1020211012121 is 1212101120201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020211012121 - 2¹⁰ = 1020211011097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020211012096 and 1020211012105.

It is not an unprimeable number, because it can be changed into a prime (1020211012129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3168357020 + ... + 3168357341.

It is an arithmetic number, because the mean of its divisors is an integer number (152081144688).

Almost surely, 2^{1020211012121} is an apocalyptic number.

It is an amenable number.

1020211012121 is a deficient number, since it is larger than the sum of its proper divisors (196438145383).

1020211012121 is an equidigital number, since it uses as much as digits as its factorization.

1020211012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336714391.

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

Adding to 1020211012121 its reverse (1212101120201), we get a palindrome (2232312132322).

The spelling of 1020211012121 in words is "one trillion, twenty billion, two hundred eleven million, twelve thousand, one hundred twenty-one".