1020212120111 has 4 divisors (see below), whose sum is σ = 1022875859712. Its totient is φ = 1017548380512.

The previous prime is 1020212120099. The next prime is 1020212120171. The reversal of 1020212120111 is 1110212120201.

1020212120111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020212120111 - 2²⁶ = 1020145011247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020212120171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331869226 + ... + 1331869991.

It is an arithmetic number, because the mean of its divisors is an integer number (255718964928).

Almost surely, 2^{1020212120111} is an apocalyptic number.

1020212120111 is a deficient number, since it is larger than the sum of its proper divisors (2663739601).

1020212120111 is an equidigital number, since it uses as much as digits as its factorization.

1020212120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663739600.

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

Adding to 1020212120111 its reverse (1110212120201), we get a palindrome (2130424240312).

The spelling of 1020212120111 in words is "one trillion, twenty billion, two hundred twelve million, one hundred twenty thousand, one hundred eleven".