1220110102011 has 16 divisors (see below), whose sum is σ = 1698171269408. Its totient is φ = 778448620800.

The previous prime is 1220110101971. The next prime is 1220110102087. The reversal of 1220110102011 is 1102010110221.

It is not a de Polignac number, because 1220110102011 - 2²¹ = 1220108004859 is a prime.

It is a super-2 number, since 2×1220110102011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220110102711) 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, 90091450 + ... + 90104991.

It is an arithmetic number, because the mean of its divisors is an integer number (106135704338).

Almost surely, 2^{1220110102011} is an apocalyptic number.

1220110102011 is a deficient number, since it is larger than the sum of its proper divisors (478061167397).

1220110102011 is a wasteful number, since it uses less digits than its factorization.

1220110102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180196542.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1220110102011 its reverse (1102010110221), we get a palindrome (2322120212232).

The spelling of 1220110102011 in words is "one trillion, two hundred twenty billion, one hundred ten million, one hundred two thousand, eleven".