1011220011101 has 4 divisors (see below), whose sum is σ = 1012822579104. Its totient is φ = 1009617443100.

The previous prime is 1011220011083. The next prime is 1011220011119. The reversal of 1011220011101 is 1011100221101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1011220011083) and next prime (1011220011119).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011220011101 is a prime.

It is a super-2 number, since 2×1011220011101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011220011401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801283055 + ... + 801284316.

It is an arithmetic number, because the mean of its divisors is an integer number (253205644776).

Almost surely, 2^{1011220011101} is an apocalyptic number.

It is an amenable number.

1011220011101 is a deficient number, since it is larger than the sum of its proper divisors (1602568003).

1011220011101 is an equidigital number, since it uses as much as digits as its factorization.

1011220011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602568002.

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

Adding to 1011220011101 its reverse (1011100221101), we get a palindrome (2022320232202).

The spelling of 1011220011101 in words is "one trillion, eleven billion, two hundred twenty million, eleven thousand, one hundred one".