1020011012111 has 24 divisors (see below), whose sum is σ = 1262678004864. Its totient is φ = 806797424160.

The previous prime is 1020011012089. The next prime is 1020011012123. The reversal of 1020011012111 is 1112101100201.

It is not a de Polignac number, because 1020011012111 - 2²² = 1020006817807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020011012092 and 1020011012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020011012611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3830696 + ... + 4088306.

It is an arithmetic number, because the mean of its divisors is an integer number (52611583536).

Almost surely, 2^{1020011012111} is an apocalyptic number.

1020011012111 is a deficient number, since it is larger than the sum of its proper divisors (242666992753).

1020011012111 is a wasteful number, since it uses less digits than its factorization.

1020011012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260991 (or 260978 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1020011012111 its reverse (1112101100201), we get a palindrome (2132112112312).

The spelling of 1020011012111 in words is "one trillion, twenty billion, eleven million, twelve thousand, one hundred eleven".