1020120202111 has 4 divisors (see below), whose sum is σ = 1024954895224. Its totient is φ = 1015285509000.

The previous prime is 1020120202093. The next prime is 1020120202147. The reversal of 1020120202111 is 1112020210201.

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 1020120202111 - 2⁹ = 1020120201599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020120202091 and 1020120202100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020120206111) 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, 2417346240 + ... + 2417346661.

It is an arithmetic number, because the mean of its divisors is an integer number (256238723806).

Almost surely, 2^{1020120202111} is an apocalyptic number.

1020120202111 is a deficient number, since it is larger than the sum of its proper divisors (4834693113).

1020120202111 is an equidigital number, since it uses as much as digits as its factorization.

1020120202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4834693112.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020120202111 its reverse (1112020210201), we get a palindrome (2132140412312).

The spelling of 1020120202111 in words is "one trillion, twenty billion, one hundred twenty million, two hundred two thousand, one hundred eleven".