1020212101111 has 8 divisors (see below), whose sum is σ = 1167107688864. Its totient is φ = 873604263840.

The previous prime is 1020212101043. The next prime is 1020212101121. The reversal of 1020212101111 is 1111012120201.

It is a happy number.

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

It is not a de Polignac number, because 1020212101111 - 2¹⁹ = 1020211576823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020212101091 and 1020212101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020212101121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71930020 + ... + 71944201.

It is an arithmetic number, because the mean of its divisors is an integer number (145888461108).

Almost surely, 2^{1020212101111} is an apocalyptic number.

1020212101111 is a deficient number, since it is larger than the sum of its proper divisors (146895587753).

1020212101111 is a wasteful number, since it uses less digits than its factorization.

1020212101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143875241.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1020212101111 its reverse (1111012120201), we get a palindrome (2131224221312).

The spelling of 1020212101111 in words is "one trillion, twenty billion, two hundred twelve million, one hundred one thousand, one hundred eleven".