1020210111111 has 8 divisors (see below), whose sum is σ = 1360928217600. Its totient is φ = 679816039352.

The previous prime is 1020210111103. The next prime is 1020210111149. The reversal of 1020210111111 is 1111110120201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020210111111 - 2³ = 1020210111103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020210111101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81001335 + ... + 81013928.

It is an arithmetic number, because the mean of its divisors is an integer number (170116027200).

Almost surely, 2^{1020210111111} is an apocalyptic number.

1020210111111 is a deficient number, since it is larger than the sum of its proper divisors (340718106489).

1020210111111 is a wasteful number, since it uses less digits than its factorization.

1020210111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162017365.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1020210111111 its reverse (1111110120201), we get a palindrome (2131320231312).

The spelling of 1020210111111 in words is "one trillion, twenty billion, two hundred ten million, one hundred eleven thousand, one hundred eleven".