212020101111 has 48 divisors (see below), whose sum is σ = 363715031904. Its totient is φ = 108812180736.

The previous prime is 212020101109. The next prime is 212020101113. The reversal of 212020101111 is 111101020212.

It is an interprime number because it is at equal distance from previous prime (212020101109) and next prime (212020101113).

It is not a de Polignac number, because 212020101111 - 2¹ = 212020101109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020101113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1428580 + ... + 1569993.

It is an arithmetic number, because the mean of its divisors is an integer number (7577396498).

Almost surely, 2^212020101111 is an apocalyptic number.

212020101111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212020101111 is a deficient number, since it is larger than the sum of its proper divisors (151694930793).

212020101111 is a wasteful number, since it uses less digits than its factorization.

212020101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998640 (or 2998633 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212020101111 its reverse (111101020212), we get a palindrome (323121121323).

It can be divided in two parts, 212020101 and 111, that added together give a palindrome (212020212).

The spelling of 212020101111 in words is "two hundred twelve billion, twenty million, one hundred one thousand, one hundred eleven".