1220100010011 has 24 divisors (see below), whose sum is σ = 1776355935744. Its totient is φ = 806944239360.

The previous prime is 1220100009949. The next prime is 1220100010021. The reversal of 1220100010011 is 1100100010221.

It is a happy number.

It is not a de Polignac number, because 1220100010011 - 2¹³ = 1220100001819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1220100009975 and 1220100010002.

It is not an unprimeable number, because it can be changed into a prime (1220100010021) 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, 28852195 + ... + 28894451.

It is an arithmetic number, because the mean of its divisors is an integer number (74014830656).

Almost surely, 2^{1220100010011} is an apocalyptic number.

1220100010011 is a deficient number, since it is larger than the sum of its proper divisors (556255925733).

1220100010011 is a wasteful number, since it uses less digits than its factorization.

1220100010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67651 (or 67648 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1220100010011 its reverse (1100100010221), we get a palindrome (2320200020232).

The spelling of 1220100010011 in words is "one trillion, two hundred twenty billion, one hundred million, ten thousand, eleven".