1011111211201 has 16 divisors (see below), whose sum is σ = 1244898885888. Its totient is φ = 799708017600.

The previous prime is 1011111211199. The next prime is 1011111211291. The reversal of 1011111211201 is 1021121111101.

It is a cyclic number.

It is not a de Polignac number, because 1011111211201 - 2¹ = 1011111211199 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1011111211291) 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, 1777405 + ... + 2276266.

It is an arithmetic number, because the mean of its divisors is an integer number (77806180368).

Almost surely, 2^{1011111211201} is an apocalyptic number.

It is an amenable number.

1011111211201 is a deficient number, since it is larger than the sum of its proper divisors (233787674687).

1011111211201 is a wasteful number, since it uses less digits than its factorization.

1011111211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056432.

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

Adding to 1011111211201 its reverse (1021121111101), we get a palindrome (2032232322302).

The spelling of 1011111211201 in words is "one trillion, eleven billion, one hundred eleven million, two hundred eleven thousand, two hundred one".