1220112101011 has 16 divisors (see below), whose sum is σ = 1285761911040. Its totient is φ = 1154606412960.

The previous prime is 1220112100997. The next prime is 1220112101023. The reversal of 1220112101011 is 1101012110221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220112101011 - 2⁹ = 1220112100499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220112100982 and 1220112101000.

It is not an unprimeable number, because it can be changed into a prime (1220112101041) 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, 67846641 + ... + 67864621.

It is an arithmetic number, because the mean of its divisors is an integer number (80360119440).

Almost surely, 2^{1220112101011} is an apocalyptic number.

1220112101011 is a deficient number, since it is larger than the sum of its proper divisors (65649810029).

1220112101011 is a wasteful number, since it uses less digits than its factorization.

1220112101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21786.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1220112101011 its reverse (1101012110221), we get a palindrome (2321124211232).

The spelling of 1220112101011 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one hundred one thousand, eleven".