1020212122111 has 24 divisors (see below), whose sum is σ = 1262664565344. Its totient is φ = 807124256640.

The previous prime is 1020212122109. The next prime is 1020212122123. The reversal of 1020212122111 is 1112212120201.

It is not a de Polignac number, because 1020212122111 - 2¹ = 1020212122109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020212123111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14678301 + ... + 14747641.

It is an arithmetic number, because the mean of its divisors is an integer number (52611023556).

Almost surely, 2^{1020212122111} is an apocalyptic number.

1020212122111 is a deficient number, since it is larger than the sum of its proper divisors (242452443233).

1020212122111 is a wasteful number, since it uses less digits than its factorization.

1020212122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81811 (or 81798 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1020212122111 its reverse (1112212120201), we get a palindrome (2132424242312).

The spelling of 1020212122111 in words is "one trillion, twenty billion, two hundred twelve million, one hundred twenty-two thousand, one hundred eleven".