1020011211111 has 16 divisors (see below), whose sum is σ = 1365725118560. Its totient is φ = 677157909120.

The previous prime is 1020011211091. The next prime is 1020011211133. The reversal of 1020011211111 is 1111121100201.

It is not a de Polignac number, because 1020011211111 - 2¹³ = 1020011202919 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 (1020011211311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50145 + ... + 1429173.

It is an arithmetic number, because the mean of its divisors is an integer number (85357819910).

Almost surely, 2^{1020011211111} is an apocalyptic number.

1020011211111 is a deficient number, since it is larger than the sum of its proper divisors (345713907449).

1020011211111 is a wasteful number, since it uses less digits than its factorization.

1020011211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380066.

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

Adding to 1020011211111 its reverse (1111121100201), we get a palindrome (2131132311312).

The spelling of 1020011211111 in words is "one trillion, twenty billion, eleven million, two hundred eleven thousand, one hundred eleven".