1020012122111 has 8 divisors (see below), whose sum is σ = 1025808436224. Its totient is φ = 1014231245400.

The previous prime is 1020012122099. The next prime is 1020012122153. The reversal of 1020012122111 is 1112212100201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020012122111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020012121111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3726815 + ... + 3991136.

It is an arithmetic number, because the mean of its divisors is an integer number (128226054528).

Almost surely, 2^{1020012122111} is an apocalyptic number.

1020012122111 is a deficient number, since it is larger than the sum of its proper divisors (5796314113).

1020012122111 is an equidigital number, since it uses as much as digits as its factorization.

1020012122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718701.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1020012122111 its reverse (1112212100201), we get a palindrome (2132224222312).

The spelling of 1020012122111 in words is "one trillion, twenty billion, twelve million, one hundred twenty-two thousand, one hundred eleven".