1021011111211 has 8 divisors (see below), whose sum is σ = 1256629060064. Its totient is φ = 807832967040.

The previous prime is 1021011111181. The next prime is 1021011111223. The reversal of 1021011111211 is 1121111101201.

1021011111211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1021011111211 - 2²⁵ = 1020977556779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1021011111191 and 1021011111200.

It is not an unprimeable number, because it can be changed into a prime (1021011111611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5609951070 + ... + 5609951251.

It is an arithmetic number, because the mean of its divisors is an integer number (157078632508).

Almost surely, 2^{1021011111211} is an apocalyptic number.

1021011111211 is a deficient number, since it is larger than the sum of its proper divisors (235617948853).

1021011111211 is a wasteful number, since it uses less digits than its factorization.

1021011111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11219902341.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1021011111211 its reverse (1121111101201), we get a palindrome (2142122212412).

The spelling of 1021011111211 in words is "one trillion, twenty-one billion, eleven million, one hundred eleven thousand, two hundred eleven".